Ineed since i don't understand this well.

9x10^16

Step-by-step explanation:

Since your exponent 16 is same all you have to do is, Add 2+7 and write the same 10^16

So your answer will be 9x10^16

Hope this helps!

80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

hope this !