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Norma-Jean [14]
3 years ago
15

9: Part A The diameter of a circle is 63 centimeters. ​Find its circumference. ​Use π=3.14. ​ A 31.5 centimeters B 98.91 centime

ters C 197.82 centimeters D 3,115.67 centimeters ​ Part B Find the area of the circle. ( use π=3.14 ) ​ Round your answer to the nearest hundredth. Answer: square centimeters. ​

Mathematics
1 answer:
BaLLatris [955]3 years ago
6 0
Part A:
The circumference of the circle is 197.92.

Explanation:
The formula for circumference of a circle is C=2 πr. If you insert the numbers, it would be C=2 x 3.14 x 31.5. Hence, the answer is 197.92.

Part B:
The area is 3117.25 square cm.

Explanation:
The formula for area of a circle is A= πr ². Inserting the numbers, it is A=3.14 x 31.5 ². Therefore the answer is 3117.25 cm ².
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