Answer:
11^2 = 121
121 x 3.14 = 379.94
Now we multiply by the height:
379.94 x 7.5 = 2,849.55 cm3 is your volume.
Surface Area:
379.94 + 379.94 = 759.88
Now we find circumference:
2 x 3.14 x 11 = 69.08,
69.08 x 7.5 = 518.1
Now we add the given areas:
759.88 + 518.1 = 1,277.98 cm2 is your surface area
______________________________________________________
14 x 14 = 196
196 x 24 = 4704
4704 divided by 3( x 1/3 ) = 1,568 in3 is your volume.
14 x 14 = 196
14 x 25 x 1/2(basically just dividing by 2) = 175
175 x 4(4 sides of triangles) = 700
Add all the given areas:
196 + 700 = 896 in2 is your surface area.