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A parallelogram has sides 30 cm and 20 ...

A parallelogram has sides 30 cm and 20 cm and one of its diagonal is 40 cm long. Then its area is :

A

`100 sqrt15 cm^2`

B

`150 sqrt15 cm^2`

C

`200 sqrt15 cm^2`

D

`300 sqrt15 cm^2`

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CHAMPION PUBLICATION-2014 TIER-II PAPER(19)-EXERCISE
  1. A piece of wire when bent to form a circle will have a radius of 84 cm...

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  2. If radius of a circle is increased by 5%, then the increase in its are...

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  3. A parallelogram has sides 30 cm and 20 cm and one of its diagonal is ...

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  4. On increasing each side of a square by 50%, the ratio of the area of n...

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  5. The area of a circle is 324 pi square cm. The length of its longest ch...

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  6. The area of a rhombus is 256 sq. cm. and one of its diagonal is twice ...

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  7. If m=sqrt(5+sqrt(5+sqrt(5+…..))) and n=sqrt(5-sqrt(5-sqrt(5-…..))), th...

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  8. If (3- 5x )/( 2x) + (3-5 y )/(2y) + (3 - 5 z)/(2x) = 0, then the val...

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  9. The distance between 2 places R and S is 42 km. Anita starts from R wi...

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  10. If the side of a square is (1)/(2)(x+1) units and its diagonal is (3-x...

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  11. If 2s = a +b + c, then the value of s (s -c ) + (s -a) (s-b) is :

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  12. If p + m = 6 and p ^(3) + m ^(3) = 72, then the value of pm is :

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  13. Where x ^(m) is multiplied by x ^(n) product is 1. The relation betwee...

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  14. The area (in sq. unit) of the triangle formed by the graphs of the equ...

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  15. If (2p)/( p ^(2) - 2p +1) = (1)/(4), then the value of p + (1)/(p) wil...

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  16. If the ordinate and abscissa of the point (k, 2 k - 1) be equal...

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  17. ABC is a triangle in which DE||BC and AD:DB = 5:4. Then DE:BC is

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  18. The radii of two concentric circles are 17 cm and 25 cm. A straight li...

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  19. AB is a diameter of a circle with centre O. The tangents at C meets AB...

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  20. For an equilateral triangle, the ratio of the inradius and the outer-r...

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