Question:
O is the centre of the circle with radius 5cm.OPQR is a rectangle.Then PR is
Answer:
Let there is a circle having centre O.
Now OP and OS are the radii of the circle.
So OP = OS = 5
Now from Pythagoras theorem,
PR2 = OP2 + OS2
=> PR2 = 52 + 52
=> PR2 = 25 + 25
=> PR2 = 50
=> PR = √50
=> PR = √(2*25)
=> PR = 5√2 cm
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