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The radii of the ends of a frustum of a cone 45 cm high are 28 cm and 7 cm. Find its volume,the curved surface area and the total surface area (=22/7)

Posted by Yogesh Rai 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Honey ☺☺☺ 6 years, 11 months ago

Vol.--48510 cubic units Csa---/110×3root274 Tsa---csa+2618

ANSWER

A shuttle **** used for playing badmintan has the shape of a fristum of a cone mounted on a hemi - sphere the external diameters of the frustum are 6cm and 2cm and height of the extire shuttle **** is 7cm . find it's extrnal surface area

Posted by Abhinash Thapa 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Ashish Garhwal 6 years, 11 months ago

For external area = 22/7×(r1+r2)l +22/7×r1×r1 + 2×22/7×r2×r2 (ans.- 22/7(19+8root5)cm2)

ANSWER

Is there anything that maths paper will come in 2 sets one easy and One hard?

Posted by Kritika Mishra 6 years, 11 months ago

CBSE > Class 10 > Mathematics

2 answers

Anushka Jugran ? 6 years, 11 months ago

Yes, but from next year

Honey ☺☺☺ 6 years, 11 months ago

Na Na Na Na

ANSWER

If the equation(1+m2)x2+2mcx+(c2-a2)=0 has equal roots ,prove that c2=a2(1+m2)

Posted by Manju S 6 years, 11 months ago

CBSE > Class 10 > Mathematics

2 answers

Ashish Garhwal 6 years, 11 months ago

Given- (1+m2)x2+2mcx+(c2-a2)=0 If this equation has equal roots then B2-4ac = 0 (2mc)2-4(1+m2)(c2-a2)=0 4m2c2-4(1+m2)(c2-a2)=0 4m2c2 = 4(1+m2)(c2-a2) m2c2 = (1+m2)(c2-a2) m2c2 = c2 - a2 + m2c2 - m2a2 0 = c2 -a2 - m2a2 m2a2 = c2-a2 m2a2 + a2 = c2 (1+m2)a2 = c2 HENCE PROVED ????

Kuldeep Singh 6 years, 11 months ago

Not knowing

ANSWER

Formula of (a-b) whole cube

Posted by Nishant Yadav 6 years, 11 months ago

CBSE > Class 10 > Mathematics

3 answers

Ashu Kumar 6 years, 11 months ago

a3-b3-3ab (a-b)

Honey ☺☺☺ 6 years, 11 months ago

Sorry it is ( a cube -b cube-3,ab(a-b)

Honey ☺☺☺ 6 years, 11 months ago

(a cube -b cube)(a sq. +ab+b sq.a)

ANSWER

How to prove irrational

Posted by Dra Ido 6 years, 11 months ago

CBSE > Class 10 > Mathematics

2 answers

Chētnà Pandey✌️ 6 years, 11 months ago

Let me tell u the format first with the help of an example I am taking √5 here:Let us assume that √5 is a rational number. we know that the rational numbers are in the form of p/q form where p,q are intezers. so, √5 = p/q p = √5q we know that 'p' is a rational number. so √5 q must be rational since it equals to p but it doesnt occurs with √5 since its not an intezer therefore, p =/= √5q this contradicts the fact that √5 is an irrational number hence our assumption is wrong and √5 is an irrational number. hope it helped u ☺️

Anushka Jugran ? 6 years, 11 months ago

Firstly u need to assume that the given number is rational then u have to express it in the form of p/q. At last u will get a wrong equation which contradicts our assumption.

ANSWER

How can we find slope in coordinate geometry

Posted by Honey ☺☺☺ 6 years, 11 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

If nth term of an AP is 2n+1.then what is the sum of its first three terms?

Posted by Tarkeshwar Ekka 6 years, 11 months ago

CBSE > Class 10 > Mathematics

3 answers

Yogita Ingle 6 years, 11 months ago

A_n = 2n + 1
Let n be 1
a₁ = 2(1) + 1
a₁ = 3
Let n be 2
a₂ = 2(2) + 1
= 4 + 1
= 5
Let n be 3
a₃ = 2(3) + 1
a₃ = 7
a₁ + a₂ + a₃ = 3 + 5 + 7 = 15

Honey ☺☺☺ 6 years, 11 months ago

First put n=1and then put n=2 u will get the 1st term and the 2nd term and then find d

Honey ☺☺☺ 6 years, 11 months ago

15

ANSWER

Prove that both the roots of the equation (x-a)(x-b) + (x-b)(x-c) + (x-c)(x-a)= 0 are real roots but they are equal only when a=b=c.

Posted by Prateek Sharma 6 years, 11 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

The larger of two supplementary angles exceeds the smaller by 20 degrees. Find them.

Posted by Prateek Sharma 6 years, 11 months ago

CBSE > Class 10 > Mathematics

3 answers

Prateek Sharma 6 years, 11 months ago

Thanks

Yogita Ingle 6 years, 11 months ago

let measure of smaller supplementary angle = x°
Larger angle = x + 20°
As per given condition
x + x + 20 = 180°
2x = 180° - 20°
2x = 160°
x = 160/2
x = 80°
So, angles are 80° and 100°.

Honey ☺☺☺ 6 years, 11 months ago

80°and100°

ANSWER

SecA -TanA=P find the value of sinA

Posted by Simi Jain Bhoomi Jain 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Honey ☺☺☺ 6 years, 11 months ago

1-psquare divided by 1 +p square

ANSWER

Tan A/1-cotA=cotA/1-tanA=1+tanA+cotA prove

Posted by Kumkum Chaudhary 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Honey ☺☺☺ 6 years, 11 months ago

It is not possible keep a=45 degrees

ANSWER

Find the value of a,which point p(a/3,2)us the mid point of the line segment joining the points q(-5,4)and (-1,0).

Posted by Sudharsan Reddy 6 years, 11 months ago

CBSE > Class 10 > Mathematics

3 answers

Nakul Sharma 6 years, 11 months ago

-9

Ashish ™ 6 years, 11 months ago

Heyy Honey.... I wanna ask u something

Honey ☺☺☺ 6 years, 11 months ago

-9

ANSWER

By elimination x+1/2y=2 (1) 3x-y=1 (2) Solve x and y

Posted by Somya Mangal 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Honey ☺☺☺ 6 years, 11 months ago

X=5÷11 and y=4÷11

ANSWER

an+d=

Posted by Khem Lall 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Saniya Sarfaraz 6 years, 11 months ago

an=a+(n-1)d an=a+nd-d an+d=a+nd

ANSWER

Hii guys how is your going for boards

Posted by Amira Roy❤❤ 6 years, 11 months ago

CBSE > Class 10 > Mathematics

2 answers

Honey ☺☺☺ 6 years, 11 months ago

Thik hi Aap apna batao

Amira Roy❤❤ 6 years, 11 months ago

How is your practice going for boards

ANSWER

The radius of a circle is 17.5 cm . Find the area of sector enclosed by two radii and an arc 44 cm in length

Posted by Sudhanshu Singh 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Honey ☺☺☺ 6 years, 11 months ago

385cmsq.

ANSWER

How many numbers I will got in my boards examination after downloading and studying this app???...

Posted by Akshit Bihal 6 years, 11 months ago

CBSE > Class 10 > Mathematics

3 answers

Yaar 6 years, 11 months ago

Wo to aap ki study pe depend karta h

Prashant Chaudhary 6 years, 11 months ago

Pata Nahi Nisha ji ?

Honey ☺☺☺ 6 years, 11 months ago

101

ANSWER

Find the value of k for which x²+(k-1)x+k²-16 is exactly divisible by (x-3) but not divisible by x+4

Posted by Ayush Bais 6 years, 11 months ago

CBSE > Class 10 > Mathematics

2 answers

Akshit Bihal 6 years, 11 months ago

Hahaha

Ram Kushwah 6 years, 11 months ago

For X=3

3^2+(k+1)x3+k2-16=0

K²+3k-4=0

(K+4)(k-1)=0 k=-4,1

ANSWER

A class teacher has the following absentee record of 40 student of a class for the whole term . Find the mean number of days a student was absent

Posted by Sujal Singh 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Sushma Bhattoo 6 years, 11 months ago

Where is record?

ANSWER

Sin^2+cos^2=1

Posted by Utkarsh Tiwari 6 years, 11 months ago

CBSE > Class 10 > Mathematics

3 answers

Saniya Sarfaraz 6 years, 11 months ago

Batana kya hai

Gurjar Naam ही भत्हैरा ??? 6 years, 11 months ago

Yes....

Sushma Bhattoo 6 years, 11 months ago

?

ANSWER

Find k so that x^+2x+k is the factor of2x

Posted by Deepanshu Rajput 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Saniya Sarfaraz 6 years, 11 months ago

Aisa bhi ho sakta hai please check your question

ANSWER

A metallic right circular cone 20cm high and whose vertical angle is 60degree is cut into two parts at the middle of its height by a plane parallel to its base. If the frustum so obtained be drawn intoa wire of diameter 1/16cm find the length of the wire ?

Posted by Arjun Gupta 6 years, 11 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

What is h in statistics?

Posted by Arjun Gupta 6 years, 11 months ago

CBSE > Class 10 > Mathematics

5 answers

Saniya Sarfaraz 6 years, 11 months ago

Height of the data

@ Aashu 6 years, 11 months ago

Sorry it is upper limit minus lower limit

Honey ☺☺☺ 6 years, 11 months ago

Class size

@ Aashu 6 years, 11 months ago

Just the sums of mean , median and mode which we studied in class 9 ........ And ogive too

Yaar 6 years, 11 months ago

Difference of upper limit and lower limit

ANSWER

How can we find median?

Posted by Arjun Gupta 6 years, 11 months ago

CBSE > Class 10 > Mathematics

2 answers

Honey ☺☺☺ 6 years, 11 months ago

There are 2 methods 1. By impirical formula that is 3med. -2mean=mode 2.by median formula l+(n/2-cf)÷f×h

Sathvik 3Sv 6 years, 11 months ago

By applying formulae

ANSWER

√(-a cos alpha-a sin alpha)^2 + (b sin alpha-(-b cos alpha))^2

Posted by Thakur Monu Singh 6 years, 11 months ago

CBSE > Class 10 > Mathematics

2 answers

Yaar 6 years, 11 months ago

Or, a^2 + b^2 + 2SinaCosa( a^2 - b^2) But both are same

Yaar 6 years, 11 months ago

(a^2 + b^) 1 - 4sin^2a cos^2a Where a is alpha

ANSWER

Is it true that every composite no. can be expressed as a product of primes and this factorisation is unique.

Posted by Lionel Messi⚽️ 6 years, 11 months ago

CBSE > Class 10 > Mathematics

5 answers

Saniya Sarfaraz 6 years, 11 months ago

Yes always

Ram Kushwah 6 years, 11 months ago

Prime factorisation of any composite number is always unique.

This is a universal theorem,you can check in your NCERT book

Puja Sahoo? 6 years, 11 months ago

Yes, every composite number can be expressed as a product of its primes but its factorization is not unique every time............

Gurjar Naam ही भत्हैरा ??? 6 years, 11 months ago

Yesssssss

@ Aashu 6 years, 11 months ago

Ya but not all the time ..

ANSWER

In an Ap the first nth term is -17 and the sum of n terms is 60 .find the common difference

Posted by Ajaz Khan 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Yogita Ingle 6 years, 11 months ago

Gravitational field intensity = gradient of Gravitational potential = dV/dr
The gravitational potential gradient dV/dr is defined as the rate of change of gravitational potential with distance in the field. This is equal to the gravitational field intensity at that point.
U = gravitational potential energy = – GMm/r
Gravitational potential V = U/m = – GM/r
Gravitational field intensity I = dV/dr
= GM/r²

ANSWER

√5 ek prem sankhya hai

Posted by Aarif Shah 6 years, 11 months ago

CBSE > Class 10 > Mathematics

4 answers

Madhu Singh 6 years, 11 months ago

What is meant by prem sankhya?

@ Aashu 6 years, 11 months ago

Ur ryt

Ram Kushwah 6 years, 11 months ago

What is Prem sankhya define or do not write such senseless.this not your FB.

@ Aashu 6 years, 11 months ago

What ????

ANSWER

For some a and b, if HCF of 55 and 210 is 210a + 55b, then find value of a and b

Posted by Deepak Sherawat 6 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

@ Aashu 6 years, 11 months ago

Value of a is 5 and b is - 19 ...... Hope it helps u ?

ANSWER

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