Question

what is algebra and mensuration and formula for volume of a cylinder?

Answer 1

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

Answer 2

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.