Question

The area of the base of a prism is 70 mm2. The perimeter of the base is 50 mm. The height of the prism is 9 mm.

What is the surface area of the prism?

A.
129 mm2

B.
520 mm2

C.
590 mm2

D.
730 mm2

Answer 1

The surface area of a prism is the sum of the lateral area plus the area of the two bases. 

LA = p * h 

p is the perimeter of the base 

For your prism 

SA = 2(70) + 50 * 9 = 590 mm^2  <-----OPTION C

Hope this answers the question,