No
approx 12.5664r
one half multiplied by four multiplied by pie multiplied by the radius squared
3.14 multiplied by 21 is 65.94
Pie is sweet and 3.14
1. The diameter multiplied by pie. 2. The radius multiplied by 2 multiplied by pie. 3. The area divided by pie, the square root of that answer then multiplied by 2 then multiplied by pie.
pie multiplied by twenty five = 78.53981634
No
approx 12.5664r
35.904pi or 112.79574...
5193.05265638
one half multiplied by four multiplied by pie multiplied by the radius squared
The diameter multiplied by (pi)2 . That's about 9.87 times the diameter.
The formula is pi multiplied by the diameter
3.14 multiplied by 21 is 65.94
Pie is sweet and 3.14
circumference = pi multiplied by the diameter