Question

Fan and Medal I'm in FLVS and I need help

Answer 1

A cone has a diameter of 8 centimeters and a height that is 4 times the diameter. Using 3.14 for pi, which of the following can be used to calculate the volume of the cone?

one over three(3.14)(32cm)2(4cm)
one over three(3.14)(32cm)2(8cm)
one over three(3.14)(4cm)2(32cm)
one over three(3.14)(8cm)2(32cm)

Answer 2

Do you know the equation for the volume for a cone?

Answer 3

no

Answer 4

wait yea

Answer 5

Volume of a cone: V=1 over 3(πr2)(h)

Answer 6

Yep

Answer 7

Yes Correct. So looking at this problem, The diameter is 8, so radius will be 4. The height is 4 times the diameter so 32 cm. Can you answer it from here?

Answer 8

think so

Answer 9

Alright, choose your answer and I'll tell you if you're right or wrong :)

Answer 10

k

Answer 11

I believe it's a but I want to say b

Answer 12

Well let's do this.

V = 1/3(pi r)^2(h). If we fill in the info that we know, we get:
V = 1/3 (pi (4))^2(32).

See which one is correct now?

Answer 13

the second

Answer 14

No not quite. The second has 32 as the radius and 8 as the height. A and B aren't correct.

Answer 15

oh okay would you times 4 and 32 since the 4 is the height

Answer 16

The height is 4*Diameter so 4 * 8 = 32 for the height.

Answer 17

okay either way it's going to equal 32 so I want to say it's C but I feel like its wrong

Answer 18

Actually, C is correct :)

Answer 19

really awesome lucky guess thx for the help

Answer 20

Anytime!