» The diameter of a circle is 38 kilometers. What is the circle's area? Use 3.14 for n.
2 answers:
Answer:
Use the formula pi×d : 3.14×38 km
So, it's 119.32
(that's what i know)
The formula for area of a circle is :
Area = pi x radius^2
Radius is half the diameter.
Radius = 38/2 = 19 kilometers
Area = 3.14 x 19^2
Area = 1,133.54 square kilometers
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