If the thickness of a pile of 12 cardboards is 35 mm, find the thickness of a pile of 294 cardboards.

Find the thickness of the wire.

The thickness of 500 sheets of paper is 3.5 cm. What will be the thickness of 350 sheets of this paper?

The thickness of 10 books was found to be 8 cm and 5 mm. What is the thickness of one book ?

If the thickness of the plate in the above problem is 2 mm, find the downward force when plate is placed vertically on water along its longest side.

A spherical iron ball 10cm in radius is coated with a layer of ice of uniform thickness that melts at a rate of 50c m^3//m in . When the thickness of ice is 5cm, then find the rate at which the thickness of ice decreases.

Find the fractions: 23 mm of 12cm

Shanti Sweets stall was placing an order for making card board boxes for packing their sweets. Two sizes of boxes were required. The bigger of dimensions 25 c m\ x\ 20 c m\ x\ 5c m and the smaller of dimensions 15 c m\ x\ 12 c m\ x\ 5c m .5 % of the total surface area is required extra, for all the overlaps. If the cost of cardboard is R s .4\ for 1000\ c m^3, find the cost of cardboard required for supplying 250\ boxes of each kind.

A student measures the thickness of a human hair using a microscope of magnification 100. He makes 20 observations and find that the average thickness (as viewed in the microscope) is 3.5 mm. What is the estimate of the thickness of hair?

A string is wound around a pencil 20 times and the total thickness of the turns is found to be 2 cm and 5 mm. What is the thickness of the string?

Megha hought a small cardboard piece for 90 paise and a packet of coloured pens for Rs 30 Find the ratio of the price of the carboard piece to the price of the coloured pens.