Height of a hollow right circular cylinder, open at both ends, is 2.8 meter. If length of inner diameter of the cylinder is 4.6 dcm and the cylinder is made up of 84.48 cubic dcm of iron, let us calculate the length of outer diameter of the cylinder.
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Q- It is required to make a plastering of sand and cement with 3.5 cm thick, surrounding four cylindrical pillars, each of whose diameter is 17.5cm. (i) If each pillar is of 3 meter height, let us write by calculating how many cubic dcm of plaster materials will be needed. (ii) If the ratio of sand and cement in the plaster material be 4:1, let us write how many cubic dcm of cement will be needed.
Chapter: Right Circular Cylinder