Question

find the unknown length X in the following figure


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Answer 1

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

so x=5cm.

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Answer 2

$\sf{\huge{\underline{Answer}}}$

Given that

ABC is Right angle triangle Right angled at B

AB = 4 cm = Height

BC = 3 cm = Base

AC = x = hypotenuse

Now As we know that in right angle triangle

$Hypotenuse \:=\: \sqrt{Base^2 + Height^2 }$

Then by substituting values

$x \:=\: \sqrt{3^2 + 4^2 }$

=> $x \:=\: \sqrt{9 + 16 }$

=> $x \:=\: \sqrt{25 }$

=> x = 5

or

AC = 5 cm

Hope it helps