Question

Find the missing side

Answer 1

`\boxed{x=13.89\:km}`

Explanation:

Pythagorean theorem

`x^2=(12^2)+(7^2)`

`x^2=144+49`

`x^2=193`

`x=√(193)`

`\boxed{x=13.89\:km}`

Answer 2

13.9. Use pythagoras theorem to find it. Square root of 12*2 + 7*2 = square root of 193 = 13.89 ~ 13.9