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2 .8.15+2.9.15+2.8.9


16.15+18.15+16.9


240+270+144


654

Answer with Step-by-step explanation:

Rectangular prism means a cuboid

Surface area of cuboid is given by:

2(lb+bh+hl)

where l is the length

b is the width

and h is the height

We are given l=8 ft

b=15 ft

and h=9 ft

Surface area= 2(8×15+15×9+9×8)

                    = 2×327

                    = 654

Hence, surface area of rectangular prism is:

654 square feet

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