Find the difference between the perimeter of two circular plates, if one has a radius of 16.8 cm and the other has a diameter of 16.8 cm.
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The difference between their perimeter is 52.8 cm
Given data :
Radius of the first circle = 16.8 cm
Diameter of the second circle = 16.8 cm
Radius of the second circle = 16.8/2 = 8.4 cm
So, perimeter of the first circle = 2 × π × 16.8 = 2 × 22/7 × 16.8 = 105.6 cm
So,the perimeter of the second circle = 2 × π × 8.4 = 2 × 22/7 × 8.4 = 52.8 cm
Difference = (105.6-52.8) = 52.8 cm (answer)
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