exam Maths Puzzle Numerical Ability

A wire stretches from the top of a pole 22 ft high to a stake in the ground which is 10 ft from the foot of the pole. Find the length of the wire.

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i need help setting up this proof...
Given that alternate interior angles are congruent prove that alternate exterior angles are congruent Suppose that the graph of a function f is known. Explain in detail how the graph of f(x/4 + 1) differs from the graph of [f(x) + 1]/4.