The surface area of a rectangular prism with sides 9 inches, 8 inches and 6 inches is 348 inches²
Surface area of a rectangular prism
surface area = 2(lw + lh + wh)
where
- l = length
- w = width
- h = height
Therefore,
l = 8 inches
w = 6 inches
h = 9 inches
surface area = 2((8 × 6) + (8 × 9) + (6 × 9))
surface area = 2((48) + (72) + (54))
surface area = 2 (174)
surface area = 348 inches²
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