circumference of disc with an area of 21 cm

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circumference of disc with an area of 21 cm

Guest Apr 10, 2015

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Best Answer

+529

+5

area = π r²

so r = √(21/π)

Now, circumference

= 2 π r

= 2 π √(21/π)

= 2 √(21 π) centimeters

You can work this out on your calculator to get a real number approximation

Badinage Apr 10, 2015

1⁺⁰ Answers

+529

+5

Best Answer

area = π r²

so r = √(21/π)

Now, circumference

= 2 π r

= 2 π √(21/π)

= 2 √(21 π) centimeters

You can work this out on your calculator to get a real number approximation

Badinage Apr 10, 2015

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