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A thread of length 528cm is used to form a circle. What will be the diameter of the circle formed?

A96 cm

B84 cm

C66 cm

D78 cm

Answer:

B. 84 cm

Read Explanation:

Length of the thread= perimeter of the circle 528 = 2πr 528 = 2 × 22/7 × r r = 528 × 7/( 2 × 22) = 84


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