The ratio of boys to girls in math class is 4 to 5. How many girls are in the class if there are 16 boys in the class?

base is just radius times pi times 2 and all that times the height divided by 3

volume is just its base times height

surface area it depends on what you're doing if its a rectangular prism or a triangular prism.

for rectangle one : width times height times two plus height times length times two plus width times length times two.

for triangular one: two times area of base (triangle) plus perimeter times height.

Step-by-step explanation: