Posted by unknown on Monday, August 29, 2011 at 2:18pm.
A cylindrical gasoline can is 18 inches across and 20 inches tall. which expression represents the approximate volume in cubic inches ?
1) (3.14)(9)2(20)
2) (3.14)(9)(20)2
3) (3.14)(18)(20)
4) (3.14)(18)2(20)
5) (3.14)(36)2(20)

mathematics  Ms. Sue, Monday, August 29, 2011 at 2:37pm
V = pi * r^2 * h
Which of your answers expresses that formula?

mathematics  unknown, Monday, August 29, 2011 at 3:20pm
number 4

mathematics  Ms. Sue, Monday, August 29, 2011 at 4:33pm
No. The radius is not 18.

mathematics  Anonymous, Monday, August 29, 2011 at 4:34pm
the answer is
5

mathematics  Ms. Sue, Monday, August 29, 2011 at 4:40pm
Nope. The radius is half the diameter.
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