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If two concentric circles, a chord of length 40 cm of larger circle becomes a tangent to the smallor circle whose radius is 15 cm. Find the radius of the larger circle.

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BEYOND PUBLICATION-TANGENTS AND SECANTS TO CIRCLE-EXERCISE
  1. In the figure, a =……………….

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  2. Perimeter of sectors = ……………….

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  3. The radius of a circle is doubled then its area becomes ……………….. Time...

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  4. If two concentric circles, a chord of length 40 cm of larger circle be...

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

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  6. Find the area of the shaded region in figure , where ABCD is a square ...

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  7. Calculate the area of the desigred region in figure , common between t...

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  8. If two tangents inclined at an angle of 60^(@) are drawn to a circle o...

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  9. A tangent to a circle is a line which …….. The circleexactly at one po...

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  10. In the figure, P is called ………….

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  11. In the figure, BC = ……………….cm.

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  12. The below figure represents……………..

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  13. ABCD is a cyclic quadrilateral then angleA+angleC = ……….

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  14. In the fiugre, AB = 6.2 then CD = ……………..cm.

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  15. If raddi pf two concentric circle are 6 cm and 10 cm , then lngth of c...

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  16. The length of the tangents to frome a point A to a circle of radius 3 ...

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  17. Number of chords of a circle is ………..

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  18. How many chords have in one circle.

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  19. The longest chord in a circle is …………

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  20. In a circle d = 10.2 cm , then r = ……………cm .

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