A road roller makes 200 rotations is covering 2200m. Find the radius of the roller.
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Answer:
1.75
Step-by-step explanation:
number of rotations = distance covered ÷ circumference
200 = 2200 ÷ 2πr
200 = 2200÷ 2 ×22/7 r
200 × 2 ×22 r =2200×7
8800 r = 15400
r = 15400/8800
=1.75
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