Out of three jars of equal diameter and height, 2/3 part of the first, 5/6 part of the second and 7/9 part of the third were filled with dilute sulphuric acid. Whole of acid in the three jars were poured into a jar of 2.1 dcm diameter as a result the height of acid in the jar becomes 4.1 dcm. If the length of diameter of each of the three equal jars is 1.4 dcm, let us write by calculating the height of the three jars.
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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