Surface area 6

Find the surface area of a prism whose bases are right triangles with sides of length 3, 4, and 5 inches and a height of 8 inches. Include a sketch

Correct result:

S =  108

Solution:

a=3 b=4 c=5 h=8  S1=a⋅ b/2=3⋅ 4/2=6 p=a+b+c=3+4+5=12 S2=p⋅ h=12⋅ 8=96  S=2⋅ S1+S2=2⋅ 6+96=108

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