To which subset of real numbers does the number 1/4 belong?
a. rational numbers
b. irrational numbers
c. whole numbers, integers, rational numbers
d. whole numbers, natural numbers, integers

Geometry answer picture question pls . reason and statements

Three cylinders have a volume of 2836 cm^3. cylinder a has a height of 900 cm. cylinder b has a height of 225 cm. cylinder c has a height of 100 cm. find the radius of each cylinder. use 3.14 as an approximate for π

Find the area of a parallelogram with the given vertices. p(-2, -5), q(9, -5), r(1, 5), s(12, 5)