SOLUTION: Find the surface area of the following: length=9 feet width=3 feet height=10 feet Someone please explain how to do surface area too so i don't fail the year!

Question 101303: Find the surface area of the following:
length=9 feet
width=3 feet
height=10 feet
Someone please explain how to do surface area too so i don't fail the year!
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
This is a rectangular prism and its surface area (A) is = 2ab + 2bc + 2ac
Because this prism has 6 rectangles, where each 2 opposite rectangles are parallel and have same area, so that we have 3 pairs of these rectangles. First 2 of them have length=a and width=b, second pair has length=b and width=c, and third pair has length=a and width=c.
If

then

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