Question

Find the diameter of a cone that has a volume of 104.67 cubic inches and a height of 4 inches. Use 3.14 for pi.

Answer 1

@TheSmartOne

Answer 2

im tired of you

Answer 3

what is the radius?

Answer 4

does not give it

Answer 5

Surface Area?

Answer 6

it only gives whats in the question i put

Answer 7

I am getting approx. 78.48079589569615

Answer 8

thats none of the answers

Answer 9

4 inches
6 inches
8 inches
10 inches

Answer 10

volume of a cone = 1/3 * height * radius^2 * pi

Answer 11

to find the radius
radius * 2 = diameter

Answer 12

still confused

Answer 13

ok, can you list what you've been given? and what you need to solve for?

Answer 14

volume= 104.67
height=4in
solve for diameter

Answer 15

ok, now let's plug that in to our formula

first we'll need to solve for radius, and then we can find the diameter by simply multiplying the radius by 2

104.67 = 1/3 * 4 * radius^2 * 3.14

can you simplify it? :P

Answer 16

i got 5

Answer 17

@TheSmartOne

Answer 18

104.67 = 1/3 * 4 * radius^2 * 3.14

(104.67 * 3)/(4 * 3.14) = r^2

r^2 = 25.0007962

r is approximately 5

great job! But we need to find the diameter, so remember this:

diameter = 2 * radius

plug in the radius and get the diameter :)

Answer 19

so 10
could you help with one more?

Answer 20

@TheSmartOne

Answer 21

mhmm, http://www.mathopenref.com/constparallel.html

an interactive thing that shows you how to construct a parallel line with a compass

what do you think the next step will be? :)

Answer 22

A?

Answer 23

correct :)