A silo consists of a right circular cylinder surmounted by a hemisphere. Find the most economical proportions for the silo, if the walls cost P4/sq in, the floor costs P8/sq in, and the roof costs P12/sq in *

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Matrices

‘Matrices’ is the plural form of the word matrix, and it is basically a spreadsheet in the form of a box. In mathematics, various functions can be carried out with matrices. Generally, a matrix comes in the shape of a square or rectangle. The elements are distributed horizontally in the form of rows, and vertically in the form of columns.