Suppose you travel north for 65 kilometers then travel east 75 kilometers. How far are you from your starting point?
2007-01-19 16:40:38 · 4 answers · asked by Lana G 1 in Education & Reference ➔ Homework Help
Start from point A, travel 65 km north to point B and then travel 75 km to the east to point C.
Now ABC is a right angled triangle with hypotenuse AC. Using Pythagoras's theorem, (AC)^2=(65)^2+(75)^2=4225+5625=
9825. Taking square root, AC=99.25 km. approx. to 2 decimal places.
2007-01-19 18:23:09 · answer #1 · answered by greenhorn 7 · 0⤊ 0⤋
Did your teacher cover the Pythagorean Theorem?
a^2 + b^2 = c^2
Plug in 65 and 75, square each of them, add them together.
That gives you c^2, which you don't want, you just want c.
So take the square root!
about 99 km
2007-01-20 00:44:09 · answer #2 · answered by powhound 7 · 2⤊ 0⤋
approximately 99.25 kilometers
2007-01-20 01:07:26 · answer #3 · answered by Anonymous · 0⤊ 0⤋
use the pythagorean theorem
2007-01-20 00:45:30 · answer #4 · answered by Jack S 4 · 0⤊ 0⤋