Heres the formula i hope this helps... SA=2lw+2lh+2hw
The equation to get the circumference of a circle is: (C = circumference & r = radius)
C = pi times diameter
The information given:
Radius = 84 inches
What you can get from the information given:
Diameter = 168 inches
So:
C = pi times diameter (168 inches)
C = pi times 168 inches (which is 527.52 inches)
C = 527.52
Hope that helps!
Looking at this we can group like terms. What are like terms? They are terms that have the same variable that we can add or subtract. In this case the like terms are 6m and m because they both have the same variable and we could add them together to get 7m.