Question 1130356

Bradley is mountain climbing with Colin and had just climbed a 16-meter vertical rock face.  Colin is standing at the bottom of the cliff, looking up at Bradley. If Colin is 20 meters away from Bradley, how far away from the cliff is Colin.
<pre>Looking at the sides of the right triangle, formed by the given lengths, we see that when 16 and 20 are each divided by 4, we get 4 for one of
the LEGS and 5 for the hypotenuse. This is a 3-4-5 PYTHAGOREAN TRIPLE, which means that the other side - the SHORTER LEG - is 4 times 3, which 
gives us a length of: {{{highlight_green(matrix(1,2,  12, m))}}}