Question

What is the circumference of a circle whose area is 1386cm square

Answer 1

Answer:

Step-by-step explanation:

Given,

that area = 1386 cm²

rea of circle = πr²

so,∴ πr² = 1386

r² = 1386×7/22

r2= √441 cm

∴ r = 21 cm

Circumference of the field= 2πr = 2 x 22/7x 21

= 132cm hope it will help u

Answer 2

$area \: = \pi {r}^{2}$

1386 = 3.14 * r ^2

r^2 = 441.4

r = 21 cm

$circumference \: = 2\pi \times r$

c = 2*3.14*21

c = 132cm

hope it helped you