a 4m board verandah runs a round a hall which is 20m long and 15 m wide .find the area of the verandah
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the length of the hall is 20 m and breadth is 15 m the width of varanda is 4 m
the are of varanda = area of outer rect - area of inner rect
the area of inner rect = l×b
= 20×15 = 300 square meters
l of outer rect = 20 + 4+ 4 = 28
b of outer rect = 15 + 4 + 4 = 23
area of outer rect = 23 × 28 = 644 square meters
area of varanda = 644 - 300 = 344 sq metres
the are of varanda = area of outer rect - area of inner rect
the area of inner rect = l×b
= 20×15 = 300 square meters
l of outer rect = 20 + 4+ 4 = 28
b of outer rect = 15 + 4 + 4 = 23
area of outer rect = 23 × 28 = 644 square meters
area of varanda = 644 - 300 = 344 sq metres
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