SOLUTION: What's the surface area of a rectangle with 10ft,5ft,4ft?

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Question 1081332: What's the surface area of a rectangle with 10ft,5ft,4ft?
Answer by MathLover1(20849) About Me  (Show Source):
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the surface area of a rectangle with 10ft,5ft,4ft
first, a rectangle is two-dimensional, has the length and width
you are given three dimensions: length 10ft, width 5ft, and height 4ft
so, you have a three-dimensional object which is a prism with rectangular bases; the term "three-dimensional" is in reference to those three measurements
if a=10ft,b=5ft,h=4ft, the surface area will be:
SA+=+2%28ab%29+%2B+2%28ah%29+%2B+2%28bh+%29
SA+=+2%2810ft%2A5ft%29+%2B+2%2810ft%2A4ft%29+%2B+2%285ft%2A4ft+%29
SA+=+2%2850ft%5E2%29+%2B+2%2840ft%5E2%29+%2B+2%2820ft%5E2+%29
SA+=+100ft%5E2+%2B+80ft%5E2+%2B+40ft%5E2+
SA+=+220ft%5E2+