Answer:
36π mm²
Explanation:
A = π × r²
We have r = d/2 = 12/2 = 6 mm
A = π × 6² = 36π mm²
A = 113.04 mm²
the area (A) of a circle is calculated as
A = πr² ( r is the radius )
the radius is half the diameter, so r = 12 mm ÷ 2 = 6 mmm , then
A = 3.14 × 6² = 3.14 × 36 = 113.04 mm²
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