Secondary School (English Medium) (5 to 8) इयत्ता ८ - CBSE Question Bank Solutions for Mathematics

Using prime factorisation, find which of the following are perfect cubes.

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Can a right triangle with sides 6 cm, 10 cm and 8 cm be formed? Give reason.

Write the Pythagorean triplet whose one of the numbers is 4.

Using prime factorisation, find the cube roots of 512

Using prime factorisation, find the cube roots of 2197

Write two Pythagorean triplets each having one of the numbers as 5.

By what smallest number should 3600 be multiplied so that the quotient is a perfect cube. Also find the cube root of the quotient.

Find the length of the side of a square if the length of its diagonal is 10 cm.

The dimensions of a rectangular field are 80 m and 18 m. Find the length of its diagonal.

Find the area of a square field if its perimeter is 96 m.

Rahul walks 12 m north from his house and turns west to walk 35 m to reach his friend’s house. While returning, he walks diagonally from his friend’s house to reach back to his house. What distance did he walk while returning?

A 5.5 m long ladder is leaned against a wall. The ladder reaches the wall to a height of 4.4 m. Find the distance between the wall and the foot of the ladder.

Put three different numbers in the circles so that when you add the numbers at the end of each line you always get a perfect square.

What is the sum of all angles of a hexagon?

How many diagonals does a hexagon have?

Which of the following is an equiangular and equilateral polygon?

In a parallelogram PQRS, if ∠P = 60°, then other three angles are ______.

The sum of angles of a concave quadrilateral is ______.

Which of the following can never be the measure of exterior angle of a regular polygon?

The number of sides of a regular polygon whose each interior angle is of 135° is ______.