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PQ is a lines segment of 12 cm whose mid...

PQ is a lines segment of 12 cm whose midpoint is R. Taking PR, RQ and PQ as diameters semicircles are drawn at the same side of PQ. The area of the circle that touches all the three circles is

A

`2pi "sq. cm"`

B

`4pi" sq. cm"`

C

`6pi" sq. cm"`

D

`(9)/(4)" sq. cm"`

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The correct Answer is:
B
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LUCENT PUBLICATION-CIRCLE AND ITS TANGENT LINES-EXERCISE 8A
  1. Two circles cut each other at points P and Q. Centres of two circles a...

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  2. In the given figure length of side AC is

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  3. PQ is a lines segment of 12 cm whose midpoint is R. Taking PR, RQ and...

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  4. The difference in lengths of parallel sides of a trapezium inscribed i...

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  5. Two chords of a circle, of lengths 2a and 2b are mutually perpendicula...

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  6. In the given figure A and B are centres of the circles. If AR = a , RB...

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  7. A circle with radius r has a chord PQ whose length is 2a. The tangents...

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  8. In the figure given below what is the measure of angle BYX?

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  9. In the figure given below, radius OA is equal to chord AB. What is the...

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  10. From a point T which is 13 cm away from center O of a circle whose rad...

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  11. In the adjacent figure AD is a straight line. OP is perpendicular to A...

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  12. In the adjacent figure, a circle is inscribed in the quadrilateral ABC...

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  13. If the length of the three sides of a triangle are 6 cm, 8 cm and 10 c...

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  14. In the figure given below, what is the measure of angle CBA?

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  15. A,B,C and D are 4 points on the circumference of the circle and O is...

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  16. PQ is a common chord of two circles. APB is a secant line joining poin...

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  17. ABCD is a cyclic quadrilateral. The tangent at A and C meet at a point...

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  18. In the figure XY is a tangent to the circle with centre O at A. If ang...

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  19. In the figure given above, AP = 3 cm, PB = 5 cm, AQ = 2 cm and QC = x....

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  20. In the figure given above, PT is a tangent to a circle of radius 6 cm....

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