CelestialMxxn CelestialMxxn

27-09-2021
Mathematics

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Two concentric circles are of radii 5 cm and 3 cm. Determine the length of the chord of the larger circle which touches the smaller circle.

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MilkyChxco MilkyChxco

27-09-2021

Answer: 4

Step-by-step explanation:

In triangle OCB,

OB2 = OC2 + BC2

52 = 32 + BC2

BC2 = 25 - 9

BC2 = 16

BC = 4

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