.
(ii)
The surface area of a solid cylinder of radius 2 cm and height 10 cm is equal
to ...... (mm)2.
(iii)
A vehicle moving with a speed of 18 km/h covers ......mm 1 s.
(iv) The
relative density of lead is 11.3. Its density is 
Answer:
(i) 
(ii) 
(iii) 
(iv) Density = Relative density x
density of water at 4°C
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