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Find the area of a circle of radius 30 c...

Find the area of a circle of radius `30 cm` (use `pi=3.14`)

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Verified by Experts

Radius of the circle = R = `30 cm`
So the required area
= `π × R² Sq.cm`
=` π × 30² Sq.cm`
...
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NCERT-PERIMETER AND AREA-SOLVED EXAMPLES
  1. Find BC, if the area of the triangle ABC is 36cm^2 and the height AD ...

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  2. In Delta PQR, PR = 8cm, QR = 4 cm and PL = 5 cm (Fig 11.22). Find: (i...

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  3. Sudhanshu divides a circular disc of radius 7cm in two equal parts. Wh...

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  4. Find the area of a circle of radius 30 cm (use pi=3.14)

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  5. The radius of a circular pipe is 10 cm. What length of a tape is requi...

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  6. Find the perimeter of the given shape (Fig 11.32) (Take pi=22//7)

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  7. Diameter of a circular garden is 9.8 m. Find its area.

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  8. The adjoining figure shows two circles with the same centre. The radi...

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  9. Two cross roads, each of width 5 m, run at right angles through the ce...

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  10. A path 5 m wide runs along inside a square park of side 100 m. Find th...

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  11. A rectangular park is 45 m long and 30 m wide. A path 2.5 m wide is c...

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  12. A door-frame of dimensions 3m×2m is fixed on the wall of dimension 10m...

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  13. Anu wants to fence the garden in front of her house (Fig 11.5), on th...

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  14. The area of a rectangular sheet is 500m^2. If the length of the sheet ...

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  15. The area of a square and a rectangle are equal. If the side of the sq...

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  16. A wire is in the shape of a square of side 10 cm. If the wire isreben...

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  17. Find the height ‘x’ if the area of the parallelogram is 24 cm^2 and t...

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  18. One of the sides and the corresponding height of a parallelogram are ...

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  19. Find the area of the following triangles (Fig 11.20).

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  20. The two sides of the parallelogram ABCD are 6 cm and 4 cm. The height...

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