Respuesta :

Answer:

A circle of radius = 7.5 or diameter = 15 or circumference = 47.12 cm has an area of: 1.767 × 10-8 square kilometers (km²)

Step-by-step explanation:

A=πr2

d=2r

Solving forA

A=1

4πd2=1

4·π·152≈176.71459in²