Question

the length and breath of a rectangle are 40cm and 10 cm respectively find the perimeter of a square of area equal to that of the rectangle

Answer 1

area of rectangle = 400 cm^2
400 =
$side {}^{2}$
side = 20 cm
perimeter of square = 4 side
= 80 cm

Answer 2

Heya !!!


Given :-

Length = 40 cm.
Breadth = 10 cm.

Area of rectangle = lb
=. 40 × 10
= 400 cm².

According to the question, a square is also of the same area.

So, area of square = 400 cm².

Therefore, the side of Square= √A.

= √400
= 20 cm.

Perimeter of square= 4 × Side.
= 4 × 20
= 80cm.

Hope you got the answer