* (3) If the perimeter of a circle is equal
to that of a square, then the ratio of
their areas is ......
A. 22 : 7 B. 14:11 C. 7:22 D. 11:14
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B. 14:11
perimeter of circle = perimeter of square
2 pie r = 4a
a= pie r/2
now, area of circle/ area of square= pie r²/(a)²
and we know that a=pie r/2
pie r²/pie²r²/4
4/pie= 4/22/7
28/22= 14/11
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