Find the radius of a circle whose circumference is 52.8 cm
Answers
Answered by
3
Answer:
2πr = 52.8
πr = 26.4
r = 26.4 * 7/22
r = 1.2 * 7
r = 8.4 cm
Answered by
2
Step-by-step explanation:
Given ;
Circumference of the circle = 52.8 cm
Radius = ?
=================
Circumference = 2πr
52.8 = 2×(22/7)×r
r = 26.4 × 7/22
r = 8.4 cm
_______________
Area = π×(r×r)
= (22/7)×(8.4×8.4)
= 221.76
_______________
Hence the area of a circle is 221.76 cm sq.
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