A wheel has a radius of 21 cm. How many complete turns must it take to cover a distance of 1980 cm? Take phi = 22/7 Please help me answer this question, many thanks :)
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Answered by
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Step-by-step explanation:
Radius of wheel = 21 cm
circumference of wheel = 2 phi r
= 2 × 22/7 × 21
= 44 × 3
= 132 cm
revolution completed in a distance = 1980 / 132
= 5
Hence , it takes 5 complete turns to cover a distance of 1980 cm.
Answered by
1
Answer: 5 complete turns
Step-By-Step explanation : Radius of wheel = 21 cm
circumference of wheel = 2 phi r
= 2 × 22/7 × 21
= 44 × 3
= 132 cm
Revolution completed in a distance = 1980 / 132
= 5
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