Daniel rides his bicycle 21km west and then 18km north. How far is he from his starting point?

Question

asked Jul 13, 2020 126k views

1 Answer

Fanfan · Answer 1 · 2020-07-19T19:39:42+0000

This is a right triangle. To find the length of the hypotenuse a^2 + b^2 = c^2.

21^2 + 18^2 = c^2

441 + 324 = c^2

765 = c^2

27.66 km