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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

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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