AB is a tangent find the length of radius
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Answer:
using hypotenuse theorem
h² = b² + p²
15² = OA² + 12²
225 = OA² + 144
225 - 144 = OA²
81 = OA²
9² = OA²
OA = 9 cm
radius = 9 cm
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Step-by-step explanation:
In triangle OAB using pythagoras theorem.
OB² = AB² + OA²
(15)² = (12)² + OA²
OA² = 225 - 144
OA² = 81
OA = 9 cm
Radius = OA = 9 CM.
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