Question

Find the circumference of a circle with area 25p m2.

Answer 1

p m2 mean..?

Answer 2

the formula for circumfrence is =2*pi*r

here r=radius

Answer 3

oh...so compare it with the area of circle i.e. pi*r^2 to find r..as

pi*r^2=25*pi m2
=>r^2=25 m2
=>r=5m

now circumfrnec is =2*pi*r
=< C=2*pi*5m=10pi=10*3.14=31.4m