how do i find the area of the Susan b Anthony chin with a diameter of 10mm?

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11-03-2015
Mathematics

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how do i find the area of the Susan b Anthony chin with a diameter of 10mm?

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AL2006 AL2006 · Answer 1 · 2015-03-11T21:35:09+01:00

AL2006 AL2006

11-03-2015

The area of every circle is (pi) x (radius)²

and the radius of every circle is (1/2) x (diameter) .

This is only useful if Susan b Anthony's chin was circular.

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Panoyin Panoyin · Answer 2 · 2015-03-12T01:30:35+01:00

Panoyin Panoyin

12-03-2015

A = πr²
A = 3.14(5)²
A = 3.14(25)
A = 78.53981634mm²

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