Find the area of a circle whose circumference is 52.8 cm
Answers
Answered by
4
Answer:
221.76 square cm
Step-by-step explanation:
circumference = 2πr
52.8=2πr
52.8/2=22/7r
26.4÷22/7=r
26.4×7/22=r
r=8.4cm
now area = πr^2
= 22/7×(8.4×8.4)
=22/7×70.56
=221.76 square cm
Answered by
2
Answer:
221.76
Step-by-step explanation:
Circumference = 52.8
2 * 22 / 7 * r = 52.8
22 / 7 * r = 52.8 / 2
r = 26.4 * 7 / 22
r = 184.8 / 22
r = 8.4
Area = 22 / 7 * r * r
= 22 / 7 * 8.4 * 8.4
= 221.76
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