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Find the area of the sector of a circle ...

Find the area of the sector of a circle of angle `120^(@)`, if the radius of the circle is 21 cm.

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The area of the sector =`(theta)/(360)(pir^(2))`
Here, `theta=120^(@) and r=21 cm`
`=(120^(@))/(360^(@))xx(22)/(7)xx21xx21=462cm^(2)`
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PEARSON IIT JEE FOUNDATION-MENSURATION-ASSESSMENT TESTS (Test - 1)
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  4. A rectangular sheet of length 5 cm and breadth 3 cm is cut from each c...

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  5. Find the perimeter (in m) of a square whose area is 225 m^(2).

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  6. The area of a square field is 36\ m^2dot A path of uniform width is la...

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  8. Find the cost of fencing a semi-circular garden of radius 14 m at Rs. ...

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  9. The total surface area of a cube is "726 m"^(2). Find its edge.

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  10. Find the ratio of the lateral surface area and the total surface area ...

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  13. Find the cost of fencing a field which is in the shape of sector with ...

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  14. If the radius of a wheel is 21 cm, then find how many times it should ...

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  15. A square sheet of side 2 cm is cut from each corner of a rectangular p...

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  16. Find the perimeter (in m) of a square whose area is "256 m"^(2)

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  17. The area of a square field is "64 m"^(2). A path of uniform width is l...

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  18. The area of a parallelogram is 100cm^(2). If the base is 25 cm, then f...

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  19. Find the cost of fencing a semi-circular garden of radius 7 m at Rs. 1...

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  20. In the adjoining figure, ABCD is a square of side 7 cm and two semicir...

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  21. The volume of a cube in 343cm^(3). Find the edge of the cube (in cm).

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