"The secret to creativity is knowing how to hide your sources."
- Albert Einstein
Two ci rc les of radi i 4 cm and 9 cm
respectively touch each other externally at
a point and a common tangent touches
them at the points P and Q respectively.
Then the area of a square with one side
PQ, is –
A thief is noticed by a policeman from a
distance of 200 m. Then thief starts running
and the policeman chases him. The thief
and the policeman run at the rate of 10 km
and 11 km per hour respectively. The
distance (in metres) between them after 6
minutes is –