the base has side length 3
there are 4 sides with area 3h = 12h
there are two ends with area 9 = 18
12h+18 = 78
h=5
The prism is 3x3x5
A rectangular prism has a square base with area 9 m2. The surface area of the prism is 78 m2. What are the dimensions of the prism?
1 answer
1 answer