Question

What is the volume of a cylinder 20 units high and 10 units in diameter?
(a) 78.5 cubic units
(b) 314 cubic units
(c) 1,571 and 3/7 cubic units
(d) 1,570 cubic units
?

Answer 1

\[V=\pi r^2h\]

Answer 2

r is radius
h is height

Answer 3

D=2r
10=2r
r=5
so:
V=(pi)(5^2)20
V=25*20(pi)
V=500pi
pi=22/7
V=(500)(22/7)
V=11000/7
V=1571+3/7

Answer 4

cubic units

Answer 5

Thank you! hahaha.

Answer 6

no problem