Question

The perimeter of circle is 42. What is the area of the circle. Who answer correctly I will make him Brainliest.​

Answer 1

$140.31 {cm}^{2}$

if unit is cm then this is the answer

Step-by-step explanation:

circumference = perimeter of circle

therefore,

2πr = 42

r = 21/ π

we know that,

ar of circle = πr^2

= π × 21/π × 21/π

= 21 × 21 / π

= 441 / 3.14

= 140.31 units^2