4. from a point q, the length of the tangent to a circle is 24cm and the distance of q from the centre is 25cm. the
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please refer to the attachment....
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In triangle AOQ
OQ^2 = OA^2 + AQ^2
25^2 = OQ^2 + 24^2
25 - 24^2 = OA^2
625 - 576 = OA^2
49 = OA^2
7 = OA
RADIUS = 7cm
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