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amber312 amber312
  • 20-02-2016
  • Mathematics
Answered

a circle mirror has a diameter of 12 inches.

What is the area,in square inches, of the mirror?

Verified Answer :

RedRicin
RedRicin RedRicin
  • 20-02-2016

For any circle, the area A = πr² (where r is the radius)
The radius is always half the length of the diameter.
Since our diameter is 12, our radius must be 6.
Let's plug 6 in for r in our equation.

A = π(6)²
6² = 6×6 = 36
A = 36π in²
For π = 3.14...
A = 36×3.14 = 113.04 in²

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