Plz help people I have been struggling

3. 42.41 in^2

4. 21.21 in^3

Step-by-step explanation:

So for #3 it is basicly asking for the surface area and the formula for that is 2πrh+2πr^2.

So r is the radius and h is the height. The radius is 1.5 because at the top it says the diameter is 3 and the radius is half the diameter.

Then the height is 3 inches.

so if you plug the radius and height into r and h you get 42.41 in^2.

For number 4 it is asking for the volume.

The formula for volume is πr^2h.

The r is the radius and the h is the height.

The radius is 1.5 and the height is 3.

If you plug those in you get 21.21 in^3.

-6 + 3 = 3 - 6

answer: 414,377,008

step-by-step explanation:

just multiply it