Q) 2.1 Fill in the blanks
(a) The volume of a cube of side 1 cm is equal to .....
(b) The surface area of a solid cylinder of radius 2.0 cm and height 10.0 cm is equal to ...
(c) A vehicle moving with a speed of covers....m in 1 s
(d) The relative density of lead is 11.3. Its density is .... or .... .
(a) We know, (Tip: Divide by 100 to convert cm to m)
The volume of a cube of side a =
Volume of cube of side 1 cm (i.e, .01 m ) =
(b) We know, (Tip: Multiply by 10 to convert cm to mm)
The surface area of a solid cylinder of radius r and height h =
Required area =
(c) (Tip: multiply by 5/18 to convert )
Ditance covered =
(d) Density = Relative Density Density of water
(Density of water = )
Density of lead=