Question

Use the formula for the surface area of a right rectangular prism to find the surface area of a shape with the following measurements: length = 4.5 cm, width = 3.5 cm, and height = 2.5 cm.(1 point)
Responses

10.5 cm2

10.5 cm squared

63 cm2

63 cm squared

35.75 cm2

35.75 cm squared

71.5 cm2

Answer 1

Surface area = 2(lw + lh + wh)
= 2(4.5·3.5 + 4.5·2.5 + 3.5·2.5)
= 2(15.75 + 11.25 + 8.75)
= 2(35.75) = 71.5 cm²

Answer: 71.5 cm².