The surface area of a sphere is 7.84π ft.2 What is the radius of this sphere?
2 answers
radius = (7.84π/4π)^(1/2) = 1.5 ft
Close again!
SA = 4π r^2
7.84π = 4π r^2
1.96 = r^2
r = 1.4 ft, not 1.5 ft
SA = 4π r^2
7.84π = 4π r^2
1.96 = r^2
r = 1.4 ft, not 1.5 ft
1 answer