Question

find the surface area of each figure. Round to the nearest tenth if necessary.​

Answer 1

Area of Rectangular prism = 2(wl+hl+hw)

Height = 9ft

Width = 11ft

Length = 12ft

Area = 2(11(12) + 9(12) + 9(11))

Area = 678ft²

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Answer 2

Answer:

678 ft^2.

Step-by-step explanation:

The surface area consists of 3 pairs of congruent rectangle.

= 2(9*12 + 11*12 + 9*11)

= 2 * 339

= 678.