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Two circles of radii 9cm and 4cm touch e...

Two circles of radii 9cm and 4cm touch each other externally. Another circle of radius C touchs these two circles and their direct common tangent. Find C.

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UNITED BOOK HOUSE-RAMKRISHNA MMISSION BOYS SCHOOL-EXERCISE
  1. Arrange in descending order: root(9)(7),root(6)(5),root(3)(2).

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  2. The radii of two circles are 8 cm and 6 cm respectively. Find the radi...

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  3. Two circles of radii 9cm and 4cm touch each other externally. Another ...

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  4. O is any point inside the rectangle ABCD. If OB = 6cm, OD = 8cm and OA...

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  5. If x= arcos theta cos alpha,y =br cos theta sin alpha,z = cr sin theta...

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  7. The volumes of a solid hemisphere is 144Pi cu. Cm, then find the diame...

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  8. Two angles of a triangle are 65^@56'55'' and 64^@3'5'' resp. Find the ...

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  9. Calculate the compound interest and amount on Rs 1600 for 1 1/2 years ...

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  10. Dipu, Rabeya and Megha started a partnership business on 1st January o...

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  11. From the equation whose roots are reciprocals to the roots of the equa...

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  12. A clock seller sold a clock by purchasing it at Rs 336. The amount of ...

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  13. x = (sqrt3 + 1)/(sqrt3 - 1) and y = (sqrt3 - 1)/(sqrt3 + 1). Then (x^2...

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  14. To dig a well of x dcm deep, one part of the total expenses varies di...

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  15. If x : a = y : b = z : c,then show that : (a^2+b^2+c^2)(x^2+y^2+z^2) =...

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  16. a+b+c+d=4 হলে , 1/((1-a)(1-b)(1-c)) +1/((1-b)(1-c)(1-d))+1/((1-c)(1-d)...

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  17. Answer any One queation : Prove that, if a perpendicular is draw on t...

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  18. Prove that the tangent and the radius through the point of contact of ...

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  19. Answer any One question : In triangleABC, AD is perpendicular on BC a...

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  20. Two circles touch externally at P. A direct common tangent AB to two c...

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