Respuesta :

Answer:

TU = 8 in

Step-by-step explanation:

If a secant segment and a tangent segment share an

endpoint outside a circle, then the product of the lengths

of the secant segment and its external segment equals

the square of the length of the tangent segment.

So

TU^2 = ST * RT

Given RT = 16 in, ST = 4 in

Plug in to find TU

TU^2 = 4 * 16

TU^2 = 64

TU = 8 in

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