Question

A= 12.8m
B=13.9m
C=12m
D= 7m

Answer 1

C: 12m

Explanation:

We can solve this by using the Pythagorean Theorem
`a^(2) + b^(2) = c^(2)`

For this triangle

a= x b= 5 c= 13

We now have the equation

`x^(2) + 5^(2) =13^(2)`

If we simplify this we get

`x^(2) + 25 = 169`

Next, we subtract 25 from both sides

`x^(2) = 144`

Finally, if we take the square root of both sides of the equation, we find that

x= 12