Question

the area of a circle is 1386 m^2. Find its circumference

Answer 1

Given -

Area of circle = 1386 m²

Also,

Area of circle = πr²

•°•

πr² = 1386

22 / 7 × r² = 1386

r² = 441

r = √ 441

r = √ ( 21 × 21 )

r = 21 m

Now,

Circumference of circle -

= 2πr

= 2 × 22 / 7 × 21

= 2 × 22 × 3

= 132 m

^^"

Answer 2

Answer:

132m

Step-by-step explanation:

find radius by area formula and substitute it in the perimeter formula