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What would be the circumference of a circle whose area is 745.36 sq cm?A. 94.4cmB. 88.8cmC. 96.8cmD. 87.4cm |
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Answer» Correct Answer - C We know area, `pir^2=745.36` `rArr 22/7xxr^2=745.36` `rArr r^2=(745.36xx7)/22=237.16` `:.r=sqrt237.16=15.4 cm` `:. " Circumference of circle"=2p[ir=2xx22/7xx15.4` `=96.8 cm` |
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