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The perimeter of a rectangle is 34 cm and its length is 10 cm.
First find the breadth, then find the length of one diagonal (in cm).

Class 8Special ParallelogramsQuadrilaterals

A11.21
B13.21
C24.42
D12.21

Step-by-Step Solution

2 (l + b) = 34 - > l + b = 17 - > b = 7

. Diagonal =

1 0^{2} + 7^{2} = 149

approx 12.21 cm.

Answer: D) 12.21

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