self Maths Puzzle Numerical Ability Area and Volume

PA and PB are tangents to a circle at A and B respectively and the chord BC is
parallel to tangent PA. If AC = 6 cm, and length of the tangent AP is 9 cm, then what is the length of the
chord BC?

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self Other Question

You have a lighter and two fuses that take exactly one hour to burn, but they don't burn at a steady rate. For example, one fuse could take 59 minutes to burn the first inch and then burn the rest of the fuse in the last minute.

How would you use these two fuses to measure 45 minutes?
A car driver, driving in a fog, passes a pedestrian who was walking at the rate of 2 km/h in the same direction. The pedestrian could see the car for 6 minutes and it was visible to him up to a distance of 0.6 km. What was the speed of the car ?
A 30 km/h
B 15 km/h
C 20 km/h
D 8 km/h