Question

Find the circumference of a circle if the area Is 300 square centimeters ?

Answer 1

Area = pi r^2 = 300, so r^2 = 300/pi and r = sqrt(300/pi)

Circumference = 2 * pi * r = 2 * pi * sqrt (300/pi) = 61.4 centimeters to nearest tenth Answer

Answer 2

area = PI * r^2

300 = 3.14 *r^2

r^2 = 300/3.14 = 95.54

r = sqrt(95.54) = 9.77

d=9.77*2 = 19.54

circumference = 3.14 * 19.54 = 61.36 cm