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#### Question

The radius of a circle is 7 cm. find the circumference of the circle.

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#### Similar questions

If the perimeter of a semi-circular protractor is 66 cm, find the diameter of the protractor (Take π = 22/7).

The length of minute hand of a clock is 14 cm. Find the area swept by the minute hand in one minute. (Use π = 22/7)

In Figure 3, two concentric circles with centre 0, have radii 21cm and 42 em. If ∠ AOB = 60°, find the area of the shaded region. [use π=22/7]

A race track is in the form of a ring whose inner circumference is 352 m, and the outer circumference is 396 m. Find the width of the track.

In the figure given below, PQRS is square lawn with side PQ = 42 metres. Two circular flower beds are there on the sides PS and QR with centre at O, the intersections of its

diagonals. Find the total area of the two flower beds (shaded parts).