A beam 9 m long, 40 cm wide and 20 cm high is made up of iron which weight 50kg per cubic metre. The weight of the beam is

A beam 9m long, 50 cm wide and 20 cm deep is made of wood which weighs 40 kg per m^(3) , find the weight of the beam.

A beam 4 m long, 50 cm wide and 20 cm deep is made of wood, which weighs 25 kg per m^3 . Find the weight of the beam.

An open wooden box 80 cm long, 65 cm wide and 45 cm high, is made of 2.5 cm thick wood. Find (i) the capacity of the box, (ii) volume of wood used and (iii) weight of the box, it being givne that 100 cm^(3) of wood weight 8g

A beam 5m long and 40cm wide contains 0.6 cubic metre of wood. How thick is the beam?

A beam 5m long and 40cm wide contains 0.6 cubic metre of wood. How thick is the beam?

A tank 20 m long, 12 m wide and 8 m deep is to be made of iron sheet. It is open at the top. Determine the cost of iron-sheet, at the rate of Rs. 12.50 per metre, if the sheet is 2.5 m wide.

A solid right prism made of iron has cross section of a triangle of sides 5 cm, 10 cm , 13 cm and of height 10 cm. If one cubic cm of iron weights 7g, then the weight of the prism is (approximately)