Question

A sphere has a diameter of 14 units. What is the volume of the sphere in cubic units? If a cylinder has the same radius as the sphere and a height of 14 units, what is the volume of the cylinder? Use 3.14 for π.

Answer 1

`A sphere has a diameter of 14 units` so the radius is 14/2 = 7 units

r = 7

Answer 2

Volume of a Sphere
\[\Large V = \frac{4}{3}\pi*r^3\]
where \(\Large \pi \approx 3.14\) and r = 7 in this case

Answer 3

tell me what you get

Answer 4

-The volume of the sphere is about 1,077.02 cubic units, and the
volume of the cylinder is about 718.01 cubic units.
-The volume of the sphere is about 1,436.03 cubic units, and the
volume of the cylinder is about 2,154.04 cubic units.
-The volume of the sphere is about 1,436.03 cubic units, and the
volume of the cylinder is about 957.35 cubic units.
-The volume of the sphere is about 1,077.02 cubic units, and the
volume of the cylinder is about 1,615.53 cubic units.

Answer 5

those are my choices

Answer 6

does the formula I posted look familiar? have you used it before?

Answer 7

no sir

Answer 8

Replace every copy of 'r' with 7, then evaluate, to get

\[\Large V = \frac{4}{3}\pi*r^3\]
\[\Large V = \frac{4}{3}*3.14*(7)^3\]
\[\Large V \approx 1,436.0267\]
This volume is approximate. I used a calculator on the last step. I typed in `(4/3)*3.14*7^3`

Answer 9

If you don't have a calculator, I recommend this one
http://web2.0calc.com/

Answer 10

thank you

Answer 11

for the cylinder, you'll use this formula
\[\Large V = \pi*r^2*h\]
where
r = radius
h = height