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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