1. The area of a circle is equal to the area of a rectangle with perimeter equal to 42 metres and breadth equal to 8.5 metre What is the area of the circle ?






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  • By: anil on 05 May 2019 01.19 am
    Let the area of rectangle and circle be $$A$$.
    Let the length of the rectangle be $$l$$ and breadth be $$b$$.
    Given $$2 imesleft(l + b ight) = 42$$
    $$b=8.5$$
    $$left(l + 8.5 ight) = 21$$
    $$l=12.5$$.
    Area of Circle=Area of Rectangle= $$l imes b$$=$$12.5 imes 5.5 = 68.75$$
    Hence Option E is the correct answer.
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