Tangent is perpendicular to the radius: tangent, radius and distance to the centre by Pythagoras

1. A.
   4 cm
2. B.
   6 cm
3. C.
   4.5 cm
4. D.
   5 cm

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1. A.
   5 cm
2. B.
   10 cm
3. C.
   15 cm
4. D.
   12.5 cm

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1. A.
   48
2. B.
   16
3. C.
   32
4. D.
   36

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1. A.
   16 cm
2. B.
   19 cm
3. C.
   18 cm
4. D.
   15 cm

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1. A.
   $2\sqrt{21}$
2. B.
   $2\sqrt{14}$
3. C.
   $3\sqrt{21}$
4. D.
   $3\sqrt{14}$

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1. A.
   192
2. B.
   60
3. C.
   120
4. D.
   360

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1. A.
   9 cm
2. B.
   15 cm
3. C.
   25 cm
4. D.
   28 cm

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1. A.
   17 cm
2. B.
   25 cm
3. C.
   31 cm
4. D.
   576 cm

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1. A.
   4 cm
2. B.
   10 cm
3. C.
   12 cm
4. D.
   16 cm

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1. A.
   $25\pi\ \text{cm}^2$
2. B.
   $144\pi\ \text{cm}^2$
3. C.
   $36\pi\ \text{cm}^2$
4. D.
   $169\pi\ \text{cm}^2$

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1. A.
   $5$ cm
2. B.
   $10$ cm
3. C.
   $\sqrt{5}$ cm
4. D.
   $\sqrt{15}$ cm

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1. A.
   12 cm
2. B.
   15 cm
3. C.
   13 cm
4. D.
   10 cm

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1. A.
   8 cm
2. B.
   9 cm
3. C.
   12 cm
4. D.
   10 cm

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