8. What is the surface area of a prism that measures 20 dm long, 15 dm
wide, and 8 dm high?
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8. What is the surface area of a prism that measures 20 dm long, 15 dm
wide, and 8 dm high?
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Verified answer
if this is a rectangular prism
formula:
SA = 2(lw + lh + wh)
SA = 2(20*15 + 20*8 + 15*8)
SA = 1160 dm²