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Question
A circle of radius 3 cm, with centre O is drawn circumscribing a ΔABC. What is the sum of OA + OB + OC ?
A circle of radius 3 cm, with centre O is drawn circumscribing a ΔABC. What is the sum of OA + OB + OC ?
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Solution
The correct option is C 9 cm
It is given in the question that the radius is 3cm. Therefore the distance of A from the centre O is 3 cm. Similarly, distance of B from O and the distance of C from O are 3 cm each.
Thus, r = OA = OB = OC = 3 cm.
Hence, OA + OB + OC = 3 + 3 + 3 = 9 cm.
9 cm
It is given in the question that the radius is 3cm. Therefore the distance of A from the centre O is 3 cm. Similarly, distance of B from O and the distance of C from O are 3 cm each.
Thus, r = OA = OB = OC = 3 cm.
Hence, OA + OB + OC = 3 + 3 + 3 = 9 cm.
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