Question

With the height 8 m and the volume 150(pi) m^3, what is the cone's diameter?
a) 7.5 m
b) 5√3 m
c) 7.5√3 m
d) 15 m

@Whiterabbit541 whatcha think? I think it's B) 5√3 m

Answer 1

volume of a cone = (1/3)(pi) (r^2) (h)

150(pi) = (1/3)(pi) (r^2) (8)

150(pi)/(pi) = (1/3)(pi)/(pi) (r^2) (8)

150 = (1/3) (r^2) (8)

150 x 3 = (1/3 x 3/1) (r^2) (8)

450 = (r^2) (8)

450/ 8 = (r^2) (8)/8

56.25 = (r^2)

7.5 = r

7.5 x 2 = 15

diameter = 15 m

answer = d) 15 m

Answer 2

@Whiterabbit541 are you completely sure?

Answer 3

yes :3