DrLIFE2117 DrLIFE2117

04-05-2018
Mathematics

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What's the diameter of a cirlce eith an area of 615.75?

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lironica lironica

04-05-2018

area of circle =πr²

πr²=615.75
r²= 615.75*7/22

r=²√196 =14

diameter =2r=2*12 =28

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