Answer :
The minimum length of the material needed to trim the gliders whole side is 54 ft.
How to find perimeter of a figure?
The perimeter of the shape of the hand glider is the sum of the whole sides. Therefore,
Let's find the length of the two upper side using pythagoras theorem.
(0, 2)(12, 7)
Hence,
d = √(7 - 2)²+(12 - 0)²
d = √5² + 12²
d = √25 + 144
d = √169
d = 13 ft
Therefore,
perimeter = 13 + 13 + 2 + 2 + 24 = 54 ft
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