Question

Pythagoras theorem sums of class 7​

Answer 1

(hypotenuse)square = ( base)square + (side) square

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Answer 2

$ac {}^{2} = \: ab {}^{2} + \: bc { }^{2} \\ 13 {}^{2} = 12 { + bc}^{2} \\ 169 = 144 + bc {}^{2} \\ 169 - 144 = bc {}^{2} \\ \sqrt{25} = bc \\ 5 = bc$