11. Draw a circle of radius 2.8 cm with centre 0. Draw a diameter PQ and construct its perpendicular bisector. On the perpendicular bisector, cut off two arcs OA = OB = 2 cm. Join PA, QA, PB and QB. What type of quadrilateral is PABQ?
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Step-by-step explanation:
The radii of the two circles are 4 cm and 2.8 cm.
If two circles touch each other externally, then the distance between their centres is equal to the sum of the radii.
Distance between the centres = 4 cm + 2.8 cm = 6.8 cm
If two circles touch each other internally, then the distance between their centres is equal to the difference of the radii.
Distance between the centres = 4 cm − 2.8 cm = 1.2 cm
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Step-by-step explanation:
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