(m + 9)(m + 9)
18m
18m m-2m = 16
If C=18m then A = 25.783m2
18m-7+12m
6m
The area of a circle is its radius squared times pi. The area of your circle (according to a Google search) is 254.4690087
18m
18 meters is equal to 1800 centimeters.
25m x 6m x 18m = 2,700 cubic m
18m
1800