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21-08-2017
Mathematics

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A circular mat has a circumference of 220 centimeters. Find the radius rounded to the nearest whole number.

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Banabanana Banabanana

21-08-2017

С = 2πr [π≈3.14]

220 = 2 * 3.14 * r
220 = 6.28r
r = 220/6.28 ≈ 35 cm ← to the nearest whole number.

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