Engineering Board Exam Reviewer · Areas of Plane Figures · hard
A square is inscribed in a semicircle of diameter 20 with one side lying on the diameter. Find the area of the square.
- 100
- 64
- 40
- 80
Answer
D. 80
Solution
Let the side be s. The top corners are at ≤ft( s2,s ) on the circle: ≤ft( s2 )2+s2=102 54s2=100 s2=80.
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