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The difference between the circumference and the diameter of a circle is 90cm. Find the radius​

User Pazulx
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Answer:

Explanation:

Circumference is 2πr - 2r = 90cm

2r(π-1)=90

divide both sides by (π-1)

2r = 90/(π-1)

2r = 42.024...

r = 21.012399 cm

User Simant
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