Calculate 397

Calculate the surface of a spire with a base in the shape of a rectangle with dimensions of 5m and 6m. The height of the spire is 7m.

Correct answer:

S =  214 m2

Step-by-step explanation:

a=5 m b=6 m c=7 m  S=2 (a b+b c+c a)=2 (5 6+6 7+7 5)=214 m2



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