Q: What is the radius of a circle with area 345 square cm?

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I think you should reword your question!

Area of a circle = (pi) R2345 = (pi) R2R2 = 345/piR = sqrt(345/pi) = 10.479 cm (rounded)There you are. That's the radius, complete with the working out. You havethe answer, and you've learned nothing, just as you requested.

No it is not a square number. It's square root is 18.57 rounded.

111,111,111

To cover 345 square feet with 16x16 tiles , you need at least 195 tiles (194 and 1/16 exactly). 345 square feet x 144 square inches/sq ft = 49680 square inches 16 x 16 = 256 square inches per tile 49680 / 256 = 194.0625 It could take more because you may have to use large fractional tiles on edges, and some may break.

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The circle's radius is 10.479 centimeters.

10.48cm

Radius is the square root of (345/pi) = 10.47935641 cm

Approximately 10.479cm

Area = 345 = pi*r2 So r = 10.48 cm

I think you should reword your question!

Area of a circle = (pi) R2345 = (pi) R2R2 = 345/piR = sqrt(345/pi) = 10.479 cm (rounded)There you are. That's the radius, complete with the working out. You havethe answer, and you've learned nothing, just as you requested.

Since area equals Pi times radius squared take and substitute what is known. 345 equals Pi times the radius squared. divide Pi into both sides for 109.8 equals the radius squared. Now take the square root of 109.8 to get an r of 10.47936 cm.

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