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A wire is in the shape …

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A wire is in the shape of a square of side 10cm. If the wire is bent again into a rectangle of length 12cm.find it's breath which encloses more are the square or the rectangle?

Posted by Saurabh Kushwaha 1 year, 9 months ago

CBSE > Class 07 > Mathematics

1 answers

Indra Otsutsuki 1 year, 9 months ago

Wire in square shape Perimeter of square=4×side =4×10 =40cm Area of square = side×side =10×10 =100sq cm Wire in rectangle shape Perimeter of rectangle=2(l+b) =2×(12+b) 40cm=24+2b 40cm-24÷2 b=16÷2 b=8cm Area of rectangle=l×b =24×8 =192sq cm So, Rectangle encloses more area than square

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