Question

A ship leave port and sails 12 km west, then 19 km north. Approximately how far is the ship from the port?

Answer 1

Answer: 22Km

Explanation:

H^2=19^2+12^2

H^2=361+144

H^2=505

Then find the square root of both sides

H=Square root(505)

H=22km(to a whole number)

Answer 2

22.47km

Explanation:

first it travels west

then north therefore

it takes a turn at right angles

so the route forms a right triangle.

12 & 19 are the legs and the actual distance the hypotenuse.

use pythagoras theorem so

12^2+19^2=d^2

144+361=d^2

505=d^2

d=sqrt(505)

d=22.47 km