CBSE > Class 10 > Mathematics | CBSE Board | Homework Help

Given :
Cuboid
Length (l)= 15cm,
Breadth (b)= 10cm ,
Height (h)= 3.5cm.

Cone (3)
Radius (r) = 0.5cm ,
depth = height of the cone(h) = 1.4cm.

Required to solve : Volume of the entire stand = ?
Volume of the entire stand = Volume of the cuboid - 3*Volume of the cone.
=>(l*b*h) - 3*[1/3*pi* r^2* h]
=>(15*10*3.5) - 3*[1/3* 22/7* 0.5* 0.5* 1.4]
=>525 - 3*[1/3* 22* 0.050]
=>525 - 3*[1/3* 1.1
=>525 - 3/3* 1.1
=>525 - 1* 1.1
=>525 - 1.1 = 523.9 cu.cm

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ANSWER

How many three digits number are divisible by 7

Posted by Shruthika S 5 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Manya Mahajan 5 years, 3 months ago

128 ans

3Thank You

Amrita Kumari 5 years, 3 months ago

It will form an a.p like 105,112,...........994 So by formula of nth term a+(n-l)d ,where a is the 1st term,n is no.of term,d is common difference ,so,105+(n-1)7=994,so by solving we get n= 128,therefore three digit no. divisible by 7 is 128.

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If A(k+1,2k) B(3k,2k+3)C(5k-1,5k) are collinear then find value of K.?

Posted by Kashish Dua 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

The product of two consecutive positive integer is 306.we need to find the integer

Posted by Geeta Jadav 5 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

亗 Punit 5 years, 3 months ago

Let the first integer be x Therefore, the second integer be x+1 Hence the product = x(x+1) According to question, x(x+1)=306 x^2+x=306 x^2+x-306=0

2Thank You

Akash Bajantri 5 years, 3 months ago

That x(x+1)=306 Xsquare+x=306 Xsquare +x-306=0 It is required quadratic equation

1Thank You

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Find the number of visit in the square root of each of the following( a) 12,100

Posted by Roshni Jaswani 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Nikita Raj 5 years, 3 months ago

144 , 10000

0Thank You

ANSWER

Reduce into its lowest form 3/15

Posted by Sandesh Naik 5 years, 3 months ago

CBSE > Class 10 > Mathematics

4 answers

Adarsh Awasthi 5 years, 3 months ago

1/5

0Thank You

Amaldev. B. S 5 years, 3 months ago

1/5=0.2

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Amrita Kumari 5 years, 3 months ago

1/5

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Sanjana Thota 5 years, 3 months ago

1/5

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ANSWER

The sum of the digits of a two digit number is 9.Also, nine times this number is twice the number obtained by reversing the order of the digits. Find the number.

Posted by Arvind Shukla 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Yogita Ingle 5 years, 3 months ago

The sum of digits f a two digit number is 9.

Also nine times this number is twice the number obtained by reversing the order of digit.

Let the unit digit and tens digits of the number be x and y

Number = 10y + x

Number after reversing the digits = 10x + y

According to the question,

⇒ x + y = 9 ... (i)

⇒ 9(10y + x) = 2(10x + y)

⇒ 88y - 11x = 0

⇒ -x + 8y =0 ... (ii)

Adding equation (i) and (ii), we get

⇒ 9y = 9

⇒ y = 1 ... (iii)

Putting the value in equation (i), we get

⇒ x = 8

Hence, the number is 10y + x = 10 × 1 + 8 = 18.

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ANSWER

5ki power x-1 + 5 ki power 1-x = 26

Posted by Prince Jangra 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

A mason constructs a wall of dimension 270 cm×300cm×350cm with the brick size 22.5cm×11.25cm×8.75cm and it is assumes that 1/8 space is covered by mortar then number of bricks used to construct the wall is?

Posted by Ajeet Dhakad 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Take 12&16 and show that the product of their LCM and HCM =product of 12&16

Posted by Krishna Ruhidas 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Jaat Shab 5 years, 3 months ago

LCM × HCF = product of the number 12 × 16 = 12 × 16 192 = 192

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ANSWER

in each of the following one of the six trignometric ratios are given.Find the values of other trignometric ratios

Posted by Rachit Jain 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Nidhi Girish 5 years, 3 months ago

Can you give the question

0Thank You

ANSWER

Ex 1.1 important question

Posted by Sumaila Ali Choudhary??? 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Rohan Dwshmukh 5 years, 3 months ago

1,3,5,8

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ANSWER

Find the discriminant of the quadratic equation 3 under root 3 x square + 10 x + under root 3 is equals to zero

Posted by Mohammad Shahwan 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

If Pth term of an A.P. is c and qth term is d, what is rth term?

Posted by Gargi Nawghade 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Amrita Kumari 5 years, 3 months ago

rth term will be a+(r-1)e Where e is the common difference and a is 1st term

1Thank You

ANSWER

2+6√5

Posted by Mantsha Sheikh 5 years, 3 months ago

CBSE > Class 10 > Mathematics

3 answers

Anupama ?? 5 years, 3 months ago

8√5 is wrong please don't write it it is15.416407865

2Thank You

Amrita Kumari 5 years, 3 months ago

2(1+3^5)

2Thank You

Geeta Jadav 5 years, 3 months ago

8√5

2Thank You

ANSWER

Without performing long division method founding termination non terminating decimal expansion 1) 31÷324

Posted by Asif Aman 5 years, 3 months ago

CBSE > Class 10 > Mathematics

4 answers

Amrita Kumari 5 years, 3 months ago

Non-terminating 324=2^3 × 3^4

0Thank You

Anupama ?? 5 years, 3 months ago

It is non terminating number as factor of 31 is31*1 and 324is 2*2*3*17

0Thank You

Priya Yadav Yadav 5 years, 3 months ago

Chapter one full

0Thank You

Priya Yadav Yadav 5 years, 3 months ago

Chapter one

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ANSWER

Find the distance between M (-7,6) and N(-2,-4) . With the graph

Posted by Samruddhi Br 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Amrita Kumari 5 years, 3 months ago

Let -7 be x1,6 be y1,-2 be x2,-4 be y2 By distance formula √(x2-x1)^,2+(y2-y1)^2 =√(-2--7)^2+(-4-6)^2 =√(5)^2+(-10)^2 = √25+100 =√125

2Thank You

ANSWER

To warn ships for under water rocks,a light house spreads a red coloured light over a sector of angle 80°to a distance of 16.5km. Find the area of the sea over the ships are warned. (Use π=3.14)

Posted by Tejasvini S 5 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Tejasvini S 5 years, 3 months ago

Thank you ?

2Thank You

Yogita Ingle 5 years, 3 months ago

When a lighthouse spreads a red-colored light underwater, it forms a sector of angle 80o and radius =16.5km

∴ Area of sector =θ/360 ×π×r²
∴ Area of sector =80/360×3.14×16.5×16.5
=189.97km²

2Thank You

ANSWER

If ax²+bx + c=0 has equal roots then c = : 1 point - b/2a b/2a - b²/4a b²/4a

Posted by Ganesh Dalavi 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Ganesh Dalavi 5 years, 3 months ago

b/2a

0Thank You

ANSWER

Find the distance between M(-7,6) and N(-2,-4). With the graph

Posted by Samruddhi Br 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

The product of two cosecutive natural number is always

Posted by Samiksha Sharma 5 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Bhargavi? Chaudhary? 5 years, 3 months ago

Natural

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Amrita Kumari 5 years, 3 months ago

Natural

0Thank You

ANSWER

how to solve garap paper in exem

Posted by Qureshi Subhan 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

What is the area is isosceles triangle

Posted by Vicky Kumar 5 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Anupama ?? 5 years, 3 months ago

Formulas to Find Area of Isosceles TriangleUsing base and HeightA = ½ × b × hUsing all three sidesA = ½[√(a2 − b2 ⁄4) × b]Using the length of 2 sides and an angle between themA = ½ × b × c × sin(α)

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Amrita Kumari 5 years, 3 months ago

U can find the formula by Heron's formula

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