Which is an expression in terms of π that represents the area of the shaded part of ⊙K. Please help ASAP , thank you!

Which is a reasonable estimate of the amount of water in a small, inflatable pool used by children?

Write an equation of the line that passes through the point (2, 3) and is perpendicular to the line x = -1. a) y = 1 b) y = 3 c) y = 0 eliminate d) y = -3

Which set of side lengths form a right side? a) 3ft,6ft,5ft b)50 in,48in,14in c)53m,48m,24m d)8cm,17cm,14cm