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In the given figure AB, CD and EF are th...

In the given figure AB, CD and EF are three towers. The angle of elevation of the top of the tower CD from the top of the tower AB is `60^(@)` and that from EF is `30^(@). BD=2sqrt3m, CD:EF=5:4 and DF=4m`.

A

6 m

B

12 m

C

7 m

D

none of the above

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The correct Answer is:
C
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ARIHANT SSC-GEOMETRY-EXERCISE(LEVEL 1)
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  2. In the adjoining figure AB || CD and PQ = SR, then :

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  3. In the given figure AB, CD and EF are three towers. The angle of eleva...

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  4. DeltaABC is equilateral triangle. Where AD = DE = BE, D and E lies on ...

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  5. The length of a rectangular is 2 cm more than its breadth . The perim...

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  8. The cost of levelling of a rectangular ground at rs. 1.25 per sq. metr...

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  10. In the adjoining figure O is the centre of the circle. angleAOD =120?^...

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  11. In a right angled triangle ABC, CD is the perpendicular on the hypoten...

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  12. In the triangle ABC, MN is parallel to AB. Area of trapezium ABNM is t...

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  13. In the given figure AD = AE, angleBDE = 100^(@), then what is the valu...

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  14. In the given quadrilateral ABCD, AB = 15 cm, BC = 20 cm and AD = 7 cm ...

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  15. There are two circles each with radius 5 cm. Tangent AB is 26 cm. The ...

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  16. One of diagonal of a parallelogram is 10 cm and an angle of the parall...

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  17. ABC is a triangle in which angleCAB = 80^(@) and angleABC = 50^(@), AE...

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  18. ABC is a triangle in which 35 times the smallest angle is equal to the...

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  19. In the adjoning figure O is the centre of the circle and AB is the dia...

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  20. In the given diagram O is the centre of the circle and CD is a tangent...

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