The total number of students in the seventh grade is 9 more than 4 times as many students as are in the art class. there are 101
student in the seventh grade write and solve a equation to find the number of stupidest in the art class l. let x represent the number of stupids in the art class
To find the circumference of the circle, we use the equation C=2πr or C=πd. These 2 equations are equivalent because 2r is the same as d, diameter. In this case, we can use C=πd because the problems already gives us the diameter.