Draw two concentric circles of radii 2 cm and 6 cm Taki
| Draw two concentric circles of radii 2 cm and 6 cm. Taking a point on the outer circle, construct a pair of tangents to the other. Measure the lengths of the two tangents. [4 MARKS]
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Right Answer is:
SOLUTION
Construction : 3 Marks
Steps of construction : 1 Mark
1. With O as centre and radii 2 cm and 6 cm, draw two concentric circles.
2. Mark a point P on the outer circle.
3. Join OP and bisect it at a point M.
4. Draw a circle with M as the centre and radius equal to MP, to intersect the inner circle in points T and T'.
5. Join PT and PT'.
6. Then, PT and PT' are the required tangents.
7. Measurement Upon measuring the two tangents, we find PT = PT' = 5.6 cm
