A circle with centre O has a radius of 6.2 cm. AB is a diameter of the circle.
ABCD is a square.
Calculate the area of the shaded region.
You must show all your working.

Three students, javier, sam, and corrine, participated in a fundraiser where people donated a certain amount of money per lap that the student ran. each student also had some initial donations that were collected before the run. the equations that represent each student's total donation, y, based on the number of laps ran, x, is shown below. match each equation with the correct rate of change for that student.

There are 85 apples on the big tree, john picked out 15%. how many did john pick out?

Select the two binomials that are factors of this trinomial x^20 - x - 20