Q. 36

# 2.2 dm^{3} of lead is to be drawn into a cylindrical wire 0.50 cm in diameter. The length of the wire is

A. 110 m

B. 112 m

C. 98 m

D. 12 m

Answer :

Given volume of the cylindrical wire is 2.2dm^{3}

Volume of a wire =

1 dm = 10 cm ⇒ 0.50 cm = 0.05 dm

Volume of the wire =

1 m= 10 dm

⇒ 11.2 dm = 112 m

Rate this question :

The dimensions of a cinema hall are 100 m, 50 m and 18 m. How many persons can sit in the hall, if each person requires 150 m^{3} of air?

Three equal cubes are placed adjacently in a row. The ratio of the total surface area of the resulting cuboid to that of the sum of the surface areas of three cubes, is

RD Sharma - MathematicsThe length of the longest rod that can be fitted in a cuboid vessel of edge 10 cm long, is

RD Sharma - MathematicsIf *V* is the volume of a cuboid of dimensions *x*, *y*, *z* and *A* is its surface area, then A/V

Given that 1 cubic cm of marble weighs 0.25 kg, the weight of marble block 28 cm in width and 5 cm thick is 112 kg. Find the length of the block.

RD Sharma - Mathematics