Question

HELP....PLEASE,USE GEOMETRY!

Answer 1

18
`\pi`

Explanation:

area of the "left most" side disk would be
`\pi r^(2)` = 9
`\pi`

the height of the disk is = 2

thus the area would be 18
`\pi` units cubed

Answer 2

56.55 units

Explanation:

If we rotates this rectangle we will get a cylinder.

The base of this cylinder is a circle with a radius of 3 units (the high of the rectangle).

And the high of this cylinder is 2 units.

Volume of cylinder is given by the formula :

V= h.pi.r²

so V= 2×3.14×9

= 56.55 units