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Question 77

Rectangle MNOP is made up of four congruent rectangles. If the area of one of the rectangles is 8 m2 and breadth is 2 m, then find the perimeter of MNOP?


Solution

We have, area of one rectangle =8 m2
and breadth = 2 m
We know that,
Area of rectangle =l×b
l×b=8
l×2=8l=4 m
Now, we have to find the perimeter of MNOP, which contians four congruent rectangles. it means they have same length and breadth.
Perimeter of rectangle MNOP = MN + NC + CD + DO + PO + PF + FA + MA
= 4 + 2 + 4 + 2 + 4 + 2 + 4 + 2
= 24 m
Hence, the perimeter of MNOP is 24 m.

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