Question

A volcanic plug shaped like a cone has a diameter of 24 km and a height of 3 km.

What is the volume of the plug?
Use 3.14 to approximate pi, and express your final answer in hundredths.


km3

Answer 1

volume of cone = (1/3)pi * r^2 * height

first step: if the diameter is 24, what's the radius?

Answer 2

k then

Answer 3

good now use the formula

Answer 4

(1/3)pi * r^2 * 12? i am very bad at cones

Answer 5

nope

Answer 6

r is the radius

Answer 7

h is the height

Answer 8

h=3km, r=12

Answer 9

(1/3)pi * 12^2 * 24

Answer 10

pi=3.14

Answer 11

v=\[V=1/3\times3.14\times12^{2}\times3\]

Answer 12

452.16?

Answer 13

use BODMAS rule