David's upright shoulder height is1m.
It shows that the vertical height of Frisbee from Gori's nose is 13- 1 = 12m.
David's frisbee is very powerful. It only needs to be within 13 meters.
Explain the straight-line distance of frisbee
In a right triangle, the right side is 12m and the hypotenuse is 13m.
The other right angle side 2
= 13^2- 12^2
=25=5^2
The other side is 5 meters.
So David needs to stay away from Gori (within 5 meters) to hit the opponent's nose and win.
References:
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