P and Q have been allotted a hostel room with two beds, a study table, and an almirah. P is an avid bird-watcher and wants to sit at the table and watch birds o...

In the following figure, CD=5 cm, BE=10 cm, AE=12 cm, ∠DAB=∠DCB and ∠DAE=∠DBC=90°. Points AFCD create a rhombus. The length of BF (in cm) is _______.

The assembly shown below has three teethed circular objects (Pinions) and two teethed flat objects (Racks), which are perfectly mating with each other. Pinions...