How many litres of pure acid are there in 8 litres of a 20% solution?

A powder tin has a square base with side 16 cm and height 28 cm. Another tin has a circular base with diameter 16 cm and height 28 cm. Find the difference in their capacities. 

The slant height of a conical mountain is 2.5 km and the area of its base is 1.54 km2. The height of the mountain is

A 70 cm long wire is to be cut into two pieces such that one piece will be 2/5 as long as the other. How many centimeters will the shorter piece be ?

The length of a room is 5.5 m and width is 3.75 m. Find the cost of paving the floor by slabs at the rate of Rs. 800 per sq. metre.

The length of a rectangle is 18 cm and its breadth is 10 cm. When the length is increased to 25 cm, what will be the breadth of the rectangle if the area remains the same?

The sum of the radius of the base and height of a solid cylinder is 40m. If the total surface area of the cylinder is 1760 m² its volume is:

Volume of a right circular cylinder is 450 cm³and its curved surfaces area is 200 cm². Find its radius?

A circular garden has a circumference of 440m. There is a 7m border inside the garden along its periphery. The area of the border is

The volume of the sphere Q is 3764% less than the volume of sphere P and the volume of sphere R is 1927 % less than that of sphere Q. By what % is the surface area of sphere R less than the surface area of sphere P?