when the circumference is 3.52cm. find the radius.
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Answer:
Circumference is pi. d or 2pi. r. If Circumference = 15 pi, then the diameter is 15 mm, so the radius = 7.5 mm.
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Answer:
Hope u understand
Step-by-step explanation:
Circumference of the circle = 31.4 cm
2πr = 31.4 cm
2 × 3.14 × r = 31.4 cm
r = 31.4 cm /6.28
r = 5 cm
Area of the circle = πr2
= 3.14 × 5 cm × 5 cm
= 78.5 cm2
Therefore, the radius and the area of the circle are 5 cm and 78.5 cm2 respectively.
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