How to solve the total surface area of a rectangular prism with a base of 2.8, a length of 7.1 and a height of 3.2

1 answer

Total surface area = 2(2.8 x 3.2) + 2(2.8 x 7.1) + 2(3.2 x 7.1)

Total surface area = 22.72 + 39.68 + 22.72

Total surface area = 85.12