Question

The hypotenuse of a right triangle is 17 cm long. If one of the remaining two sides is o
length 8 cm, find the length of the third side.​

Answer 1

Answer:

${17}^{2} = 8 {}^{2} + x {}^{2}$

${x}^{2} = {17}^{2} - 8 {}^{2}$

${x}^{2} = 289 - 64$

${x}^{2} = 225$

$x = \sqrt{225}$

$x = 15$

Third side is 15 cm

Answer 2

Answer:

15

Step-by-step explanation:

We all should know about the Pythagoras theorem to solve this question. In few words, it means that the first side's square+seconds side's square=square of hypotenuse

here, hypotenuse=17 cm

and one side's length is given as 8 cm

we can put this into the formula

a square+b square=c square

a square+(8*8)=17*17

= x+64=289(we took a square as x)

x=289-64

x=225

235 iis not the answer as 225=a square not a

so a=√225

we knwo that 225 is 15's square so 15 is the answer

you will also need to have basic knowledge of square roots as if the square number is bigger then we have to apply formula.

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