Question

Help finding the third side.

Answer 1

7.1

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 = √(51)`

b = 7.1 (to the nearest tenth)

Answer 2

24 is the third side

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