# 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 = )

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