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Question

The diagonal of a rectangular plot is 34 m and its perimeter is 92 m. Find its area.

A
480 m2
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B
380 m2
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C
310 m2
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D
580 m2
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Solution

The correct option is A 480 m2
Let length be a m and breadth be b m.
Daigonal =34 m
=>a2+b2=(34)2
=>a2+b2=1156
Also,
2(a+b)=92
=>(a+b)=46
Area of rectangle =(ab) m2
Now,we know,
(a+b)2=a2+b2+2ab
=>(46)2=1156+2ab
=>ab=211611562
=9602
=480
Therefore,
Area =480 m2
304902_188225_ans.jpg

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