Question

what is the length of x

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Answer 1

By Pythagoras theorem

h^2=P^2+B^2

x^2=3^2+4^2

x^2=9+16

x^2=25

x=5

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Answer 2

Answer:

It is a right angle triangle

So, the square of height + square of base = square of hypotenuse

$3 ^{2} + 4 { }^{2} \\ 9 + 16 \\25 = x { }^{2} \\ \sqrt{25} = x \\ 5 = x$