Answer:
a. 3.95 in.
Step-by-step explanation:
The formula for the volume V of a cylinder is the product of the height h, the square of the radius r of the base circles and the constant Π which is equivalent to 3.14 or 22/7.
Therefore,
v = Πr^2h
Given
v = 980 , h = 20 r = ?
980 = 22/7 × r^2 × 20
r^2 = 980 × 7/(22 × 20)
r^2 = 15.59
r = 3.95
