Question

On a rectangular wall of length 28 metres and height 23 metres, there is a window in the shape of triangle surmounted on a square. If the base of triangle and square overlap and length of each side of the square is 8 metres and length of altitude of the triangle is 5 metres, then excluding the window, what is the surface area of the wall?

A 616 sq.m
B 942 sq.m
C 702 sq.m
D 560 sq.m
E None of these
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