What is the radius and circumference of a circle if the diameter is 10•5cm what is the radius and circumference if pie is ²²/7
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Diameter of the circle = 10.5 cm (given)
Radius = Diameter/2 = 10.5/2 = 5.25 cm
Circumference of the circle = 2πr ( π = 3.14)
Circumference = 2 * 3.14 * 5.25 = 32.97 cm
Circumference of circle when π is 22/7
Circumference = 2 * 22/7 * 5.25 = 32.97 cm
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Answer:
Radius of the circle = Diameter / 2
= 5.25
Circumference of the circle = 2πr
= 2 X 22/7 X 5.25
= 10.5 X 22/7
= 33
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