so we know the radius of the sphere is 8, and its surface area is 4πr², therefore its surface area is 4π8², namely 256π.
we also know that the surface area of the cylinder is half that of the sphere, namely 256π/2 or 128π, let's use that surface area to get the height h.

since now we know h and r for the cylinder, and we also know r for the sphere, let's check their volume's ratio.

When multiplying the same base with exponents, you keep the base the same and then you add the exponents, so for this question you do:
10^3 x 10^6
10^9
Answer:
6 7/8
Step-by-step explanation:
Take a quick look at those fractions. The LCD here is 8. We'll leave 4 5/8 as is, but change 2 1/4 to 2 2/8.
Now we'll add together:
4 5/8
+ 2 2/8
-----------
6 7/8