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What is the area of a circle with a diameter of 21 centimeters? use 3.14 for pi
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What is the area of a circle with a diameter of 21 centimeters?


use 3.14 for pi

User Dinocarl
by
3.4k points

2 Answers

5 votes

Answer:

346.185 cm²

Explanation:

radius = diameter / 2

Area of a circle = πr²

radius = 21/2 = 10.5

Area = 3.14(10.5)²

Area = 346.185 cm²

User Mike Duigou
by
2.8k points
3 votes

Answer:

346.4 square centimeters (cm²)

User Andrew Hoyer
by
3.4k points
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