Question

a rectangular field is 40 m long and 30 m broad.find the length of its diagonal

Answer 1

$length \: of \: the \: diagonal \: = \sqrt{ {40}^{2} + {30}^{2} } = \sqrt{ {50}^{2} } = 50$

Answer 2

According to Pythagoras' Theorem a² + b² = c², 

$\sqrt{40^2 + 30^2} = \sqrt{1600 + 900} = \sqrt{2500} = 50$

The answer is 50 m. 

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