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Question

Solve. Give answers to two significant digits. A merry-go-round 40 ft in diameter makes four revolutions every minute. What is the speed of a seat on the rim?

Solution

VerifiedAnswered 2 years ago

Answered 2 years ago

Step 1

1 of 2Diameter of merry go round $(d)=40$ ft. Perimeter of merry go round will be $(P)=\pi d=40\pi$ ft.

Since, the perimeter of merry go round is $40\pi$ feet so point on it will travel a distance of $40\pi$ feet in one compete rotation.

Also it is given that merry go round rotates at 4 revolution in every 1 minute.

**Distance travel by merry go round in 1 min $=4\times40\pi=160\pi$**

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