Question

A cylinder has a radius of 10 m and a height of 8 m.

What is the exact volume of the cylinder?

18π m³

80π m³

160π m³

800π m³

Answer 1

@Hero

Answer 2

@Allison the same formula and steps apply with this one. You start with \(V_c = \pi r^2 h\), input the given values for radius(r) and height(h), then solve for \(V_c\)

Answer 3

I'd like to see you try this one on your own. Post all your steps here please.

Answer 4

3.14 * 10 * 2 * 8

Answer 5

Avoid using 3.14 in this instance. Use π instead.

Answer 6

Divided by 3.14 is 160

Answer 7

Who told you to divide anything by 3.14? Do you see division symbols in the formula?

Answer 8

Triston ._.

Answer 9

\(V_c = \pi r^2 h = \pi \times r^2 \times h\)

Answer 10

I did that.

Answer 11

By the way, \(r^2\) means \(r \times r\) not \(r \times 2\)

Answer 12

I KNOW.

Answer 13

@Allison, okay but I observe you posted something in the same format as \(r \times 2\) earlier.

Answer 14

I got 502.

Answer 15

How did you get that? Show me your steps? Remember, you must use \(\pi\) in place of 3.14.

Answer 16

3.14 * 10 * 2 * 8

Answer 17

The final result will have \(\pi\) in it.

Answer 18

You should have \(V_c = \pi \times 10 \times 10 \times 8\)

Answer 19

2512 now

Answer 20

As I said before \(r^2 = r \times r\) not \(r \times 2\). There's something wrong with your calculator. Do not input \(\pi\) when calculating. Just calculate the \(10 \times 10 \times 8\)

Answer 21

180

Answer 22

@Allison, what's \(10 \times 10\). Everyone should know how to calculate that WITHOUT a calculator.

Answer 23

100!!!!

Answer 24

Okay, great, now what's \(100 \times 8\)

Answer 25

800.

Answer 26

Bingo. Now all you have to do is add the \(\pi\) on the end and remember that the units are cubic.