Question

5. O is the centre of the arc AYB, and OPYR is a rectangle. If the radius of the arc is 4 cm, find the length of the diagonal PR of the rectangle.
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Answer 1

Step-by-step explanation:

In the adjoining figure O is the centre of the circle The radius OP bisects a rectangle ABCD at right angle If DM = NC = 2 cm and AR = SB = 1 cm and KS = 4 cm and OP = 5 cm 

THEN AB=AR+RK+KS+SB

Or AB=1+1+4+4=10 cm

Diff of DM or NC with AR& SB is 2-1=1

Then AD=LK=BC=1 cm

So the area of the rectangle ABCD =AB×BC=10×1=10cm2

HOPE IT'S HELPS ✌