A circle has an area of 80 square centimeters. Which answer is closest to the measure of its radius?

Question

jonnytarlen jonnytarlen

04-01-2016
Mathematics

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A circle has an area of 80 square centimeters. Which answer is closest to the measure of its radius?

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AL2006 AL2006 · Answer 1 · 2016-01-04T04:55:10+01:00

There are no close answers, because you decided
not to list the choices at all.

The area of a circle is (pi) x (radius²) .

So    80 = (pi) (radius²)

Divide each side by pi : Radius² = (80/pi)

Take the square root
of each side:       Radius = √ (80/pi)

       = 5.0463 cm (rounded)

Nikapoo Nikapoo · Answer 2 · 2020-03-20T01:29:21+01:00

Nikapoo Nikapoo

20-03-2020

Answer:

5 centimeters

Step-by-step explanation:

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