Question

what will be the diameter of a circle having area 1386 cm^2

Answer 1

Answer:

Step-by-step explanation:

area of circle=1386cm²

we know that,

area=πr²

1386=πr²

r²=1386*7/22

r²=63*7

r²=441

r=21

we know that

d=2r

d=2*21

 =42cm