This question is very tricky and also very important. i am not able to calculate it properly. My answer is not coming right, i don’t know whether i have made mistake in forming the formula or i have made it in calculations. Here you have to find the weight of an iron pillar, (where 1cm cube of iron weighs 7.8 grams) whose some part is in the form of a right circular cylinder and remaining in the form of a right circular cone. The radius of the base of each of cone and cylinder is 8 cm. The height of the cylindrical part is 240 cm and for the conical part, it is 36 cm.