A group of boys has an average weight of 44 kg. One boy weighing 50 kg leaves the group and another boy weighing 40 kg joins the group. If now the aver...
A solid metallic cone with a radius of 6 cm and height of 12 cm is melted and recast into smaller cones with a radius of 3 cm and a height of 4 cm. How ...
A rectangular piece of copper foil of length 63 cm and area 1386 cm2 is folded along its width to form a cylinder such that there is only one...
If the volume of a cuboidal tank is 1620 m3 and the ratio of the length, width and height of tank is 5:4:3 respectively then find the height ...
If you divide a 24.6 m long wire in the ratio 12: 29, what will be the length of the longer piece?
The sum of the radius and height of a cylinder is 19m. The total surface area of the cylinder is 1,672 m² . What is the volume of the cylinder?
The area of a regular hexagon with side as 6 cm is
A village having a population of 8000 requires 200 litres of water per head per day. It has a tank measuring 40 m `xx` 30 m `xx` 12 m. The water of this...
If the ratio of areas of two circle is 36:49, then the ratio of their circumferences will be:
A barrel has 140 liters of mixture of alcohol and water, in which water is 10%. 30 litre of this mixture was taken out and replaced with “X”...
