givens
pi = 3.14
r = 2
h = 4
Formula
v = pi r^2 h
Sub and Solve
V = 3.14 * 2^2 * 4
V = 3.14 * 4 * 4
V = 3.14 * 16
V = 50.24
The awnser to number 2 i think
2. area = 363,636
Hello!
We are going to use the rectangular prism of the image as a guide:
First of all, the AC segment is calculated using the Pythagoras' theorem:

(A) The surface area of a prism is the sum of the surface areas of each face.
For the 2 triangles ABC and DEF

For the ABEF Rectangle

For the ACDE Rectangle

For the BCDF Rectangle

To finish you need to sum up the areas of each face:

(B) The volume of a prism is the product of the area of its base and the height of the prism. In this case, the base is a triangle so the formula and the calculations for the volume are as follows
1/2((6)(3)). (6)(12). 72-9
1/2(18). 72. 63ft squared
9