Question

On a rectangular wall of length 30 metres and height 25

Q: Answer-On a rectangular wall of length 30 metres and height 25 metres, there is a window in the shape of tr...

Surface area of the entire wall length height 30 25 750 m2 Surface area of the window sum of surface area of the square part surface area of the triangular part 72 12 7 4 49 14 63 m2 Required surface area 750 63 687 m2

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 7 metres and length of altitude of the triangle is 4 metres, then excluding the window, what is the surface area of the wall?

A 637 sq.m

B 616 sq.m

C 608 sq.m

D 687 sq.m

E None of these

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