Here this to help the 7th graders

A complete overveiw

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?

Acircle has a circumference of 7.850 units. what is its radius?

The area (a) of a circle with a radius of r is given by the formula and its diameter (d) is given by d=2r. arrange the equations in the correct sequence to rewrite the formula for diameter in terms of the area of the circle.