Question

The area of the base of a prism is 24 mm2. The perimeter of the base is 22 mm. The height of the prism is 5 mm.

What is the surface area of the prism?

Answer 1

(b is the shape of the ends)Surface Area = Lateral area + Area of two ends(Lateral area) = (perimeter of shape b) * LSurface Area = (perimeter of shape b) * L+ 2*(Area of shape b)

so your awnser is?

Answer 2

So using his calculation formula, the answer is 79 mm. squared.