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In Figure, OABC is a squaer inscribed in...

In Figure, OABC is a squaer inscribed in a quadrant OPBQ. If OA=20cm, find the are of shaded region. `[U s epi=3. 14.]`

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Given,` OA = 20 cm`
Thus, `OA = AB = 20 cm` [Sides of a square]
∴ Using Pythagoras theorem
`OB2 = OA2 + AB2`
...
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