Find the area of the circle with the given radius or diameter. Use pi = 3.14. d = 13 A=?
2 answers:
Hello!
The formula for finding area of a circle is: π · r²
Diameter is 2x the radius. To find the radius when the diameter is given, divide the diameter by 2.
The diameter is 13. 13 ÷ 2 = 6.5
r = 6.5
6.5² = 6.5 × 6.5 = 42.25
π = 3.14
Multiply 3.14 by 42.25 to get the area
3.14 × 42.25 = 132.665
<em>The area of the circle is 132.665 sq. units, which is the last option.</em>
The answer is 132.665
6.5 × 6.5 × 3.14 = 132.665
Hope this helped!
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