Valencian Community PAU Technical Drawing II Practice Questions - Valencian Community PAU Technical Drawing II (Dibujo Técnico II Dibuix Tècnic II) Exam

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A point $P$ is located at distance $d = 50\text{ mm}$ from the center $O$ of a circle of radius $R = 30\text{ mm}$. What is the power of point $P$ relative to the circle, and what is the length of the tangent segment from $P$ to the circle?

Power = $1600\text{ mm}^2$, Tangent length = $40\text{ mm}$ Power = $3400\text{ mm}^2$, Tangent length = $58.3\text{ mm}$ Power = $2000\text{ mm}^2$, Tangent length = $44.7\text{ mm}$ Power = $800\text{ mm}^2$, Tangent length = $28.3\text{ mm}$

Correct Answer:

Power = $1600\text{ mm}^2$, Tangent length = $40\text{ mm}$

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