Mathematics
The radius of a circle is 6 cm. Find its diameter. If O is the centre of the circle; state, giving reasons, the position of points A, B and C; if;
(i) OA = 4.8 cm
(ii) OB = 7.5 cm
(iii) OC = 6 cm
Circles
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Answer
The radius of a circle = 6 cm
As, the diameter is twice the radius.
Diameter = 2 x 6 cm = 12 cm.
(i) OA = 4.8 cm
As, 4.8 < 6 (Radius)
Hence, A lies inside the circle.
(ii) OB = 7.5 cm
As, 7.5 > 6 (Radius)
Hence, B lies outside the circle.
(iii) OC = 6 cm
As, 6 = 6 (Radius)
Hence, C lies on the circumference of the circle.
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