Question

What is the area of a circle with a circumference of 15.7 Use 3.14 for pi. C = 1 point

Tt xD and A = tr^2*
49.298
O 19.625
78.5
31.4

Answer 1

c=2pir

15.7=2pir

divide by 2

7.85=pir

divide both sidse by pi

7.85/pi=r

ok so

area=pir^2

area=pi(7.85/pi)^2

area=pi(61.6225/(pi^2))

area=61.6225/pi

use 3.14 for pi

area=61.6225/3.14

area=19.625 square units

Hope it helped <3