3 February, 16:00
Find the area of a circle with a diameter of 4.
Either enter an exact answer in terms of it or use 3.14 for IT and enter your answer as a decimal.
3 February, 16:40
The formula for area of a circle is (pi) * radius^2
Radius is half of diameter so the radius is 2.
2 squared is 4, then multiply by pi to get an answer of 4 (pi) or 12.56.
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» Find the area of a circle with a diameter of 4. Either enter an exact answer in terms of it or use 3.14 for IT and enter your answer as a decimal.