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In a rectangle, the ratio of length to breadth is 4 : 3 and the diagonal is 25 cm.
Find the length of the rectangle (in cm).

Class 8Special ParallelogramsQuadrilaterals

A18
B40
C22
D20

Step-by-Step Solution

Let length = 4

k

, breadth = 3

k

. Diagonal =

(4 k)^{2} + (3 k)^{2} = 5 k = 25 - > k = 5

. Length =

4 \times 5 = 20

cm.

Answer: D) 20

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