If a wooden log with a shape of rectangular parallelopiped with square cross section is made by wasting minimum wood from a right circular wooden log having the diameter of `12sqrt2` metre and length 21 metre. Calculate the quantity of remaining wood and the quantity of wasted wood.

A cylindrical wooden log of 12sqrt(2) m diameter and 21 metres long is taken to make it a rectangular parallelopiped shape having a square cross section. If minimum wood is lost find how much wood will be there and what is the loss ?

If a right circular cone of height 15 cm and of diameter 30 cm is made from a wooden sphere of radius 15 cm , then percent of wood will be lost ?

Answer any two questions : Determine the volume of a solid right circular cone which can be made from a solid wooden cube of 4.2 dcm efge length by wasting minimum quantity of wood .

A group of fire brigade personnel carried a right circular cylindrical tank filled with water and pumped out water at a speed of 420 metres per minute to put the fire in 40 minutes by three pipes of 2 cm diameter each. If the diameter of the tank is 2* 8 metres and its length is 6 metre, then calculate (a) what volume of water has been spent in putting out the fire and (b) hte volume of water that still remains in the tank .

The length of the base diameter of a wooden toy of conical shape uis 10 cm . The expenditure for polishing whole surfaces of the toy at the raye of rupees 2.10 per square - metre is rupees 429. Calculate the height of the toy. Also determine the quantity of wood which is required to make the toy.

A right circular cylindrical tank of 9 metres height is filled with water. Water comes out from there through a pipe having length of 6 cm diameter with a speed of 225 metre per minute and the tank becomes empty after 2 hours 24 minutes. Calculate the length of radius of the tank.

The length of the base diameter of a wooden toy of conical shape is 10 cm. The expenditure for polishing whole surfaces of the toy at the rate of Rs. 2.10 perm² is Rs. 429. Calculate the height of the toy and also determine the quantity of wood which is required to make the toy.​

A right circular cylindrical tank of 9 metre height is filled with water. Water comes out from there though a pipe having length of 6 cm diameter with a speed of 225 metre per minute and the tank becomes empty after 2 hrs. 24 minutes. Calculate the length of diameter.