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Length 1.5 cm Breath 1.25 cm Height 65m =0.65 cm Area of sheet required= csa of cuboid +lb 2*65/100 (l.5+1.25) +1.5*1.25 1.3(2.75) +1.875 3.575+1.875 5.450m sq. If the cost of 1m sq. Sheet is rupees 20 Then. 5.45 m sq. Is 5.45*20 109 rupees I THINK IT'S HELPFUL TO YOU!!!!!!!!!!!!!!!!!!!!!!!

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what is the sum of angles at a point?

Posted by Student Inquisitive 4 years, 10 months ago

CBSE > Class 09 > Mathematics

1 answers

Sudhan Nagarajan 4 years, 10 months ago

360degree

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ANSWER

If the angles of a triangle are in the ratio 1:2:3 determine 3 angles

Posted by Jatin Chaudhary 4 years, 10 months ago

CBSE > Class 09 > Mathematics

2 answers

Student Inquisitive 4 years, 10 months ago

Ans:- Let the angles be 1x,2x and 3x By Angle Sum Property of triangle, we have, => 1x+2x+3x = 180° => 6x = 180° => x = 180°/6 => x= 30° Thus, angles of the triangle are- • 1x = 1×30°=30° • 2x=2×30°=60° • 3x=3×30°=90°

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Anushka Chaudhary 4 years, 10 months ago

30, 60,90

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The weight in KG of 8 children are 13.4,10.6,12.7,17.2,14.3,15,16.5,9.8

Posted by Gopal Ji Patel 4 years, 10 months ago

CBSE > Class 09 > Mathematics

1 answers

Indian Gamer 4 years, 10 months ago

Karna kya hai

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What is the full form of (s) in heron's formula??

Posted by Khushi Sharma 4 years, 10 months ago

CBSE > Class 09 > Mathematics

7 answers

Indian Gamer 4 years, 10 months ago

Semi perimeter

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Sudhan Nagarajan 4 years, 10 months ago

Semi perimeter

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Daksh Vitthani 4 years, 10 months ago

Semi perimeter

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Vyom Dubey 4 years, 10 months ago

Semi perimeter

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Jannat Kumari 4 years, 10 months ago

Semicircle

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Sakshi Roy 4 years, 10 months ago

This means half perimeter or semi perimeter

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Khushi Sharma 4 years, 10 months ago

Semi perimeter

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The radius and hight of a cone are in the ratio 4:3 . The area of a base is 154cm² . Find the area of a C.S.A

Posted by Md.Irfan Thandar 4 years, 10 months ago

CBSE > Class 09 > Mathematics

2 answers

Vyom Dubey 4 years, 10 months ago

231 square cm

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Pratham Bhatia 4 years, 10 months ago

Lodu

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If X + 4 is equal to minus 4 and X Y is equal to 2 then the value of x square + Y square is

Posted by Archana Sharma 4 years, 10 months ago

CBSE > Class 09 > Mathematics

4 answers

Student Inquisitive 4 years, 10 months ago

Answer is 12

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Student Inquisitive 4 years, 10 months ago

Q. If x+y= -4 and xy= 2, then find the value of x^2+y^2..... Solve) given, x+y = -4 xy = 2 To find, x^2 +y^2 = ? Since, (x+y)^2= x^2 +y^2 +2xy ● Squaring on both the sides.... => (x+y)^2 = (-4)^2 => x^2 +y^2 +2xy = 16 ● since, xy = 2 => x^2 +y^2+ 2×2 = 16 => x^2 +y^2 +4 = 16 => x^2 +y^2 = 16-4 => x^2 +y^2 = 12 ....ans. Hope you get the right answer..

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Student Inquisitive 4 years, 10 months ago

In question, I think its not ..X+4... it will be x+y...so that we can get the answer of x^2+y^2

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Padmini Kumar 4 years, 10 months ago

64+1/16

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Find the median of all prime numbers between 20 and 40.

Posted by Gauri Saneja 4 years, 10 months ago

CBSE > Class 09 > Mathematics

2 answers

Student Inquisitive 4 years, 10 months ago

How to solve that question (Find the median....40)?

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Vyom Dubey 4 years, 10 months ago

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When a number x is added to the following set of numbers 5,7,8,12,6,10 and 11, the mean is 9. Calculate the value of x

Posted by Gauri Saneja 4 years, 10 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Square of 14

Posted by Harsh Deodhar 4 years, 10 months ago

CBSE > Class 09 > Mathematics

5 answers

Ankit Rajput 4 years, 10 months ago

196

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Pragya Singh 4 years, 10 months ago

169

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Iqbal Ahmad 4 years, 10 months ago

196

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Seema Chandel 4 years, 10 months ago

Answer is 169

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Prisha Gupta 4 years, 10 months ago

196

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ANSWER

is difference of two irrational is rational?

Posted by Priyanshu Pal 4 years, 10 months ago

CBSE > Class 09 > Mathematics

1 answers

Yogita Ingle 4 years, 10 months ago

S.No	Rational Numbers	Irrational Numbers
1	Numbers that can be expressed as a ratio of two number (p/q form) are termed as a rational number.	Numbers that cannot be expressed as a ratio of two numbers are termed as an irrational number.
2	Rational Number includes numbers, which are finite or are recurring in nature.	These consist of numbers, which are non-terminating and non-repeating in nature.
3	Rational Numbers includes perfect squares such as 4, 9, 16, 25, and so on	Irrational Numbers includes surds such as 2, 3, 5, 7 and so on.
4	Both the numerator and denominator are whole numbers, in which the denominator is not equal to zero.	Irrational numbers cannot be written in fractional form.
5	Example: 3/2 = 1.5, 1/ 6 =0.1666..	Example: √5, √11

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ANSWER

(A+B) (A+B)

Posted by Mahver Joshi 4 years, 10 months ago

CBSE > Class 09 > Mathematics

1 answers

Yogita Ingle 4 years, 10 months ago

(A+B) (A+B) = (A + B)² = A² + 2AB + B²

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Convert in p/q form 0.2

Posted by Anmol Singh 4 years, 10 months ago

CBSE > Class 09 > Mathematics

2 answers

Yogita Ingle 4 years, 10 months ago

0.2 = 2/10

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Deepak Rai 4 years, 10 months ago

Sir , how can we obtained square of 7119

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2x + 5x = 9x

Posted by Tushar Malik 4 years, 10 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Corresponding angles are equal????

Posted by Ishika Sardana 4 years, 10 months ago

CBSE > Class 09 > Mathematics

2 answers

Yogita Ingle 4 years, 10 months ago

If a transversal intersects two parallel lines, then each pair of corresponding angles are equal.

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Tushar Malik 4 years, 10 months ago

Yes

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The floor of a rectsngular hall has a perimeter 250 m if the cost painting the four walls at the rate of RS 10 per m2 is 15000 find the height of hall

Posted by Raj Singh 4 years, 10 months ago

CBSE > Class 09 > Mathematics

1 answers

Yogita Ingle 4 years, 10 months ago

Perimeter of rectangular hall = 2(l + b) = 250 m
Total cost of painting = Rs.15000
Rate per m2 = Rs.10
Area of four walls = 2(l + b) h m2 = (250×h) m2
A/q,
(250×h)×10 = Rs.15000
⇒ 2500×h = Rs.15000
⇒ h = 15000/2500 m
⇒ h = 6 m
Thus the height of the hall is 6 m.

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ANSWER

how to remember the theorems of ln 8 quadrilaterals easily

Posted by Baby Hamsa 4 years, 10 months ago

CBSE > Class 09 > Mathematics

2 answers

Student Inquisitive 4 years, 10 months ago

For remembering the theorems, practise the theorems based questions and for quick review see pg.151 summary of chapter Quadrilaterals

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Student Inquisitive 4 years, 10 months ago

Chapter8 Quadrilaterals Following are the basic concepts:- • Introduction - about what is quadrilaterals • Angle Sum Property of a □ - 360° •Types of □ - ▪square, rectangle, rhombus are llgm ▪kite is not a llgm •Properties of a llgm(prooving questions come) Th.8.1a diagonal divides it into two congruent ?s ▪Th.8 2-in llgm , opposites side are equal ▪Th.8.3- converse of Th.8.2 ▪Th.8.4- in llgm, opposite angles are equal ▪Th.8.5- converse of Th.8.4 ▪Th.8.6- diagonals bisect each other ▪Th.8.7- converse of Th.8.6 ▪Th.8.8- in llgm, pair of opposite sides are equal and parallel •Mid-point theorem- two theorems only ▪Th.8.9- line segment joining the midpoints of two sides of a ? is ll to the 3rd side ▪Th.8.10- converse of Th.8.9 YOU CAN GO THROUGH THIS WAY AND ALSO PRACTICE THE THEOREMS WITH EXERCISE QUESTIONS... & for overview U can follow pg.151 summary.. So that it can help U, Hope so...

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Douts in circle chapte in ncert book of maths

Posted by Sanya Bharti 4 years, 10 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Dout circle

Posted by Sanya Bharti 4 years, 10 months ago

CBSE > Class 09 > Mathematics

0 answers

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Lcm of 2no's is 1200.what will be HCF

Posted by Bharti Bulani 4 years, 10 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

What are important concepts in real numbers

Posted by Sruthy Shyju 4 years, 10 months ago

CBSE > Class 09 > Mathematics

1 answers

Student Inquisitive 4 years, 10 months ago

For important concepts in real numbers U can go through pg.27 of ncert book math class9th i.e. Summary portion... & for better preparation, practise questions like:- •how to represent rational as well as irrational numbers on number line •how to find rational as well as irrational b/w two real numbers •how to express irrational numbers in the form of p/q •rationalization of denominator • laws of exponents for real numbers..

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What is the formula for the (a-b)2

Posted by Nirmal Sm 4 years, 10 months ago

CBSE > Class 09 > Mathematics