28.285714
Because the area of a circle is pi*radius2. So, if you triple the radius to 3*radius, the area becomes pi*(3*radius)2 = pi*(32*radius2) = pi*9*radius2 that is, 9 times the original area.
34.2222 x 9 = 308
This depends on what you are integrating with respect to. Let's assume: x. Integral of 9*pi = 9*pi*x + C. However, if you are integrating with respect to pi, then integral of 9*pi is (9/2)pi^2 + C
30 multiplied by 9 is 270.
40 multiplied by 9 is 360
0.0648 multiplied by 9 is 0.5832
Although leap years will never happen two years in a row, let alone 9, there would be 3294 days long, or 79056 hours. The equation is there's 366 days in a leap year multiplied by 9 years is 3294 days. And then 3294 days multiplied by 24 hours per day is 79056 hours.
multiplied to seventy and add to nine is impossible, but add up to 9 and multiplied to -70, or add up to -9 and multiplied to 70 are possible. In that case, 14 and -5 would do it (or -14 and 5)
9 must be multiplied by 211/3 in order to get 192.
216
9
9*pi or 2*pi*4.5