roselyngicom42 roselyngicom42

19-07-2021
Mathematics

contestada

the diameter of a circle is 8 cm what is its area?

Respuesta :

limichael2005 limichael2005

19-07-2021

A = πr^2 and d = 2r.

So r = 8/2 = 4 cm.

Now use the first formula

A = π(4 cm)^2 = 50.265 cm^2

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