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In a circle, the length of an arc of cen...

In a circle, the length of an arc of central angle `40^(circ)` 'is `3 pi` centimetres. What is the perimeter of the circle? What is its radius?

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  1. From an iron ring of radius 9 centimetres, a piece of central angle 30...

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  2. From an iron ring of radius 9 centimetres, a piece of central angle 30...

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  3. In a circle, the length of an arc of central angle 40^(circ) 'is 3 pi ...

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  4. In a circle, the length of an arc of central angle 25^(circ) is 4 cent...

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  5. From a bangle of radius 3 centimeters, a piece is to be cut out to mak...

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  6. The picture shows the parts of a circle centered at each vertex of an ...

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  7. Part of circles are drawn, centred at each vertex of a regular octagon...

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  8. If the length of an arc of a sector having radius 9 cm is 2 pi cm, the...

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  9. A rod of length 20 cm is bent in thè form of an arc. If the central an...

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  10. The length' of an arc of a circle is 4 cm. What is the length of an ar...

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  11. Find the circumference of a circle of area 15 sq . cm

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  12. If the perimeter of a circle and perimeter of a square are equal, then...

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  13. What is the area of a sector of central angle 120^(circ) in a circle o...

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  14. Calculate the-area of the green colored part of this picture:

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  15. Centered at each corner of a regular hexagon, a part of a circle is dr...

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  16. The picture below shows two circles, each passing through the center o...

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  17. The figure shows three circles drawn with their centers on each vertex...

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  18. The picture shóws a rectangular sheet of metal with two semicircles (h...

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  19. A garden is in the shape shown below, with two semicircles on the shor...

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  20. The pendulum in a clock is 14 ~cm long. It moves through 40^(circ) mak...

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