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Find out the circumference of a circle whose diamder is 21 cm? |
Answer» Answer :
Given :
To FIND :
Solution :First we need to find radius We KNOW that ,
》Radius = 21/2 》Radius = 10.5cm Hence , Radius is 10.5cm Now we have to find the circumference of circle: As we know that ,
Where, R is radius 》Circumference of circle = 2πr 》2 × 22/7 × 10.5 》 22/7 × 21 》22 × 3 》66cm Hence , Circumference of a circle is 66cm |
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