A monkey is chained to a stake in the ground. The stake is 2.78 m from a vertical pole, and the chain is 3.48 m long. How high can the monkey climb up the pole?
The chain represents the hyp. of a rt.
triangle. the hor side = 2.78 m and
the height is the ver. side.
x^2 + y^2 = z^2
(2.78)^2 + y^2 = (3.48)^2,
y^2 = (3.48)^2 - (2.78)^2,
y^2 = 12.11 - 7.73,
y^2 = 4.38,
y = 2.1 m = max. distance monkey can climb up pole.