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Algebra is the part of mathematics in which alphabets are used to represent numbers.
mensuration means to measure.
 volume of a cylinder is  \pi  r^{2} h

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Formula for volume of a cylinder =  πr²h.
 ALGEBRA:-The part of mathematics in which letters and other general symbols are used to represent numbers and quantities in formulae and equations.
MENSURATION :- The part of geometry concerned with ascertaining lengths, areas, and volumes.
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