Question

Can someone please help me with this?

Answer 1

Answer:

Step-by-step explanation:

As we can see it is a right angled triangle so

hypotenuse (h) = 14 . 7 km

perpendicular (p) = 11.9 km

base (b) = x

Now by using Pythagoras theorem

$b^{2} = h^{2} - p ^{2}$

$b^{2} = 14.7^{2} - 11.9^{2}$

$b^{2} = 216.09 - 141.61$

$b^{2} = 74.48\\b = \sqrt{74.48} \\b = 8.63 km$

Hope  it was helpful.:)