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kherson
[118]
3 years ago
11
What is the area of a circle with a diameter of 21 centimeters?
Mathematics
Answer
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2
answers:
dexar
[7]
3 years ago
5
0
The area of a circle with a diameter of twenty-one is roughly 346 or 346.36 to be exact.<span />
- Divide the diameter by two to find the radius.
- Square the radius & Multiply by Pi
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sattari
[20]
3 years ago
4
0
Area of a circle: πr²
Data:
diameter: 21 cm
radius=diameter/2=21 cm/2=10.5 cm
area of this circle: π(10.5 cm)²=110.25π cm² (≈346.36 cm²)
Answer: area=110.25π cm²
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