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D is any point on the side QR of the par...

D is any point on the side QR of the parallelogram PQRS. `DeltaPQDandDeltaSDR` have the areas 16 sq.cm and 20 sq.cm respectively, then QD : RD =

A

`3:4`

B

`4:5`

C

`5:6`

D

`6:7`

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Knowledge Check

  • If the area and perimeter of a rhombus are 1 sq.cm. and 4 cm. respectively, then the ratio of its diagonals is

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