Question

Sarah wants to swim across a 193 m river. Due to the current she is swept 67 m downriver from where she wanted to be. What is the length that she actually swam from start to where she ended? Round to the nearest tenth

Answer 1

Apply Pythagorean theorem

`\\ \rm\rightarrowtail H^2=P^2+B^2`

`\\ \rm\rightarrowtail H^2=193^2+67^2`

`\\ \rm\rightarrowtail H^2=41738`

`\\ \rm\rightarrowtail H=204ft`(Approx)

Answer 2

Explanation:

Sarah swam the diagonal length of a right-angled triangle with sides of river width, 193m and how far she was swept downstream, 67m.

By Pythagorean Theorem, distance swam = sqrt(193^2+67^2)

= 204.3 m