Question

14.
TW
123. The area of the circle whose circumference is equal to the perimeter of a
square of side 11 cm is
(a) 154 cm
(b) 144 cm
(c) 134 cm?
(d) 124 cm​

Answer 1

Answer:

a) 154 cm

Side of the square=11cm

Perimeter of a square= 4×side

= 4 × 11 = 44 cm

Given perimeter of the square is equal to the circumference of the circle

So circumference of the circle is also equal to 44cm

Now, circumference of the circle= 2πr

2 × 22/7 ×r= 44cm

r= 7cm

So the area of the circle = πr^2

Area of the circle = 22/7 × 7 × 7

=154cm