Question

The Length of the Hypotenuse of a Right T riangle is 13 cm If one of the sides of the Triangle is 5 cm Long Find the Length of the other sides

Answer 1

A^2 + B^2 = C^2

5^2 +B^2= 13^2

B^2 = 13^2 - 5^2

169 -25 = 144

square root of 144 = 12

B^2 = 12

Answer 2

$h {}^{2} = l {}^{2} + b {}^{2}$
then,
$13 {}^{2} = 5 {}^{2} + b {}^{2}$
$b {}^{2} = 13 {}^{2} - 5 {}^{2}$

$b {}^{2} = 169 - 25$
=144
then,b=
$b = \sqrt{144}$
=12