What is the ratio for the volumes of two similar spheres, given that the ratio of their radii is 5:9?
A. 125:729
B. 25:81
C. 729:125
D. 81:25

Option A

Explanation:

the ratio of radii to volume is ^3 "to the third power"

so 5^3 : 9^3 would be the ratio for volumes

125:729

jhfdergmllm: $"$& (& #@$& () 9887¥€¢£`~¥°℅™℅℅℅=

step-by-step explanation:

π^°×{{€€

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: