Question

Perimeter and area of circle if radius is 15 cm

Answer 1

The formula for area of a circle =π(r)^2

Where r denotes the radius.

So area of the circle of r=15

=3.14×(15)^2

=706.5cm^2   ans

The formula for circumference of the circle is 2πr

substituting the formula with radius 15cm,we get

circumference,C=2*π*15

circumference,C=2*3.14*15                        

= 94.2cm.  ans

# you can also substitute the value of π as 22/7  also