Question
A circle touches all four sides of a quadrilateral. If
AB = 12 cm, BC = 22 cm, and AD = 18 cm, then what is the length of CD?Solution
Let length of CD = x When all four sides of a quadrilateral touch a circle, then the opposite sides of that quadrilateral are equal. Then-Â Â Â AD +BC = AB +CD 18 +22 = 12 + x 12 + x = 40 X = 28cm
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