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A drain cover is made from a square meta...

A drain cover is made from a square metal plate of side 40cm having 441 holes of diameter 1cm each drilled in it. Find the area of the remaining square plate.

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RD SHARMA ENGLISH-AREAS RELATED TO CIRCLES-All Questions
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  2. In Figure AB = 36 cm and M is mid-point of AB. Semi-circles are drawn...

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  3. A drain cover is made from a square metal plate of side 40cm having 44...

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  4. A chord AB of a circle of radius 10cm makes a right angle at the centr...

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  5. A chord of a circle of radius 10cm subtends a right angle at the ce...

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  6. A pendulum swing through an angle of 30^0 and describes an arc 8.8 cm ...

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  7. In Figure, there are shown sectors of two concentric circles of radii ...

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  8. A car travels 1 kilometre distance in which each wheel makes 450 co...

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  9. In Triangle A B C with fixed length of B C , the internal bisector of...

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  10. An elastic belt is placed round the rim of a pulled of radius 5cm. One...

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  11. The short and long hands of a clock are 4cm and 6cm long respectively....

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  12. The perimeter of a sector of a circle of radius 5.2cm is 16.4cm. Find ...

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  13. The length of minute hand of a clock is 14cm. Find the area swept by ...

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  14. A chord AB of a circle of radius 10cm subtends a right angle at the ...

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  15. A B is the diameter of a circle, centre OdotC is a point on the circum...

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  16. In a circle with centre O and radius 5cm, AB is a chord of length 5sqr...

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  17. An arc of a circle is a length 5pic m and the sector it bounds has an ...

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  18. A horse is placed for grazing inside a rectangular field 70m by 52m an...

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  19. Circle inside a Circle : PQRS is a diameter of a circle of radius 6 cm...

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  20. In figure, find the area of the shaded region [U s epi=3. 14]

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