Question 1

What is the formula for the perimeter of a rectangle?

Accepted Answer

The perimeter of a rectangle is calculated by adding the lengths of all its four sides. Since opposite sides are equal, the formula is 2 × (Length + Breadth).

Question 2

What is the area of a square whose side is 5 cm?

Accepted Answer

The area of a square is calculated by multiplying the side length by itself (Side × Side). Here, 5 cm × 5 cm = 25 square cm.

Question 3

What is the circumference of a circle with radius 'r'?

Accepted Answer

The distance around a circle is called its circumference. The formula for the circumference of a circle is 2πr, where r is the radius.

Question 4

What is the area of a parallelogram?

Accepted Answer

The area of a parallelogram is the product of its base and the corresponding height (Base × Height).

Question 5

What is the area of a triangle?

Accepted Answer

The area of a triangle is half the product of its base and height, given by the formula 1/2 × Base × Height.

Perimeter and Area — CBSE Class 7 Mathematics Important Questions & Revision Notes