Question

Help finding the third side.

Answer 1

Answer:

24 is the third side

Step-by-step explanation:

Since we already know the hypotenuse, we have to do the oppisite of the pythagorean theorem. A^2+B^2=C^2

7^2+B^2=25^2

49+B^2=625

-49

B^2=576

B=24

Answer 2

Answer:

7.1

Step-by-step explanation:

We use pythagoras' theorem of:

$a^{2}+b^{2}=c^{2}$

where c is the hypotenuse (side opposite the right angle)

If the unknown side is b then:

$b^{2} = c^{2} -a^{2}$

Substitute the values in to give you:

$b^{2} = 100-49$

$b^{2} = 51$

$b = \sqrt{51}$

b = 7.1 (to the nearest tenth)