The area of circle(A) is given by the formula A=pi r^2 where r is the circle radius. The formula to find r is: 1.(A/pi)^1/2
2.A^2/pi
3.pi/A

A=54 centimeters^2and pi=22/7, r is_ centimeters
1: 4.15
2: 2.33
3: 17.2

Me, prove a quadrilateral with vertices g(1,-1), h(5,1), i(4,3) and j(0,1) is a rectangle using the parallelogram method and a rectangle method.

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?

Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y < 4x − 8 y is greater than or equal to negative 5 over 2 times x plus 5 part a: describe the graph of the system, including shading and the types of lines graphed. provide a description of the solution area. (6 points) part b: is the point (5, −8) included in the solution area for the system? justify your answer mathematically. (4 points)