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Q.

If a circle touches all four sides of quadrilateral PQRS then PQ = 11 cm, QR = 12 cm and PS = 8 cm then find length of RS?

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a

18 cm

b

28 cm

c

9 cm

d

6 cm

answer is A.

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Detailed Solution

detailed_solution_thumbnail

We have a quadrilateral PQRS

⇒PQ + RS = SP + RQ

= 11 + RS = 8 + 12

⇒RS = 20 – 11

⇒RS = 9

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