Question

The area of the circle whose circumference is equal to the perimeter of a square of side 8cm

Answer 1

Hii ☺ !!

Circumference of circle = 8 × 4

Circumference of circle = 32 cm

2πR = 32

2 × 22/7 × R = 32

R = ( 32 × 7 /44 )

R = 5.09 cm [ Approximately ]

Therefore,

Area of circle = πR² = 22/7 × 5.09 × 5.09 = 81.35 cm².

Answer 2

Hii Mate!!

Question : The area of the cricle whose circumference is equal to the perimeter of a square of side 8 cm ..

Here , we have to find the area of circle.

Solution :

Side of square = 8 cm [ Given ]

Therefore,

Perimeter of square = 4 × Side

Perimeter of square = 4 × 8 = 32 cm.

It is given that the circumference of circle is equal to the perimeter of square of side 8 cm.

So,

Circumference of circle = 32 cm

2πR = 32

2 × 22/7 × R = 32


R = ( 32 × 7 / 2 × 22 ) = 8 × 7 / 11 ) = 5.09 cm.


Therefore,


Area of circle = πR² = 3.14 × (5.09)² = 81.35 cm².


♥Hope it helps you ♥

By Rishi403

BeBrainly..