Two concentric circles are of radii 13cm ,12cm . Find the length f chord of larger circle that touches the smaller circle
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Answer:
5 cm
Step-by-step explanation:
As per the figure
angle ABC=90° (A line drawn from the centre to a chord subtend right angle)
AB²+BC²=AC²
(12)²+BC²=(13)²
BC²=169-144
BC²=25
BC=5 cm
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