the perimeter of a circle is 45 cm more than its diameter then find the perimeter of a circle
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Step-by-step explanation:
First you will draw a circle and it's diameter as it is compared to its angle . it is very easy
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Step-by-step explanation:
Given The perimeter of a circle is 45 cm more than its diameter then find the perimeter of a circle
- Let radius of circle be r
- Now perimeter (circumference) = diameter + 45
- So 2πr = 2r + 45
- 2πr - 2r = 45
- Or 2r (π – 1) = 45
- Or r = 45 / 4.28
- Or r = 10.5 cm
- Therefore perimeter = diameter + 45
- = 2(10.5) + 45
- = 66 cm
Hence perimeter of the circle is 66 cm
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