The circumference of a circle is 15 pie what is the area of the circle in terms of pie

Step-by-step explanation:

We are given the circumference.  The formula for circumference is  

C = πd     where d is the diameter and C is the circumference.

We are given C = 15π, so we have...

15π = πd  

Solving for d gives us...

15 = d              (divide by π on both sides)

The formula for area of a circle is  

A = π(r²)     where A is the area, and r is the radius

The radius is half of the diameter, so we divide 'd' by 2 to get the radius...

r = d/2 = 15/2 = 7.5

The area of the circle is...

A = π(7.5)²

 A = 56.25π units²

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm