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  3. What is the perimeter of the figure above? (Note, figure not necessarily drawn to scale)

What is the perimeter of the figure above? (Note, figure not necessarily drawn to scale)

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问题 What is the perimeter of the figure above? (Note, figure not necessarily drawn to scale)
选项 A、155
B、185
C、220
D、235
E、250
答案E
解析 To determine the length of the unmeasured side, divide the figure into a rectangle with length 65 and a right triangle. If the height of the triangle is 40 and the hypotenuse is 50, then by the Pythagorean theorem the other leg is 30; the top segment of the rectangle is 65 like its opposite side, so the unmeasured side is 30+65=95. The perimeter is the sum of the sides: 95+40+65+50=250.
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