book Maths Puzzle Numerical Ability

Given central angle EOF=120 degrees and radius is 12 meters find:
A. measure of arc EF
B. the arc length EF
C. Area of the sector

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2) The volume of a cylinder (think about the volume of a can) is given by V = πr2h where r is the radius of the cylinder and h is the height of the cylinder. Sup 9y^2+9 2y^3+2y^2
-------*----------- fractions
y^2-1 3y