Question

It is required to make a plastering of sand and cement with 3.5 cm thick, surrounding four cylindrical pillars, cach of whose diameter is 17.5 cm. If cach pillar is of 3 metre height, let us write by calculating how many cubic dem 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. 0​

Answer 1

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