Because the circumference is equal to the diameter multiplied by pi or the radius multiplied by 2*pi.
1/3 multiplied by pi multiplied by radius squared multiplied by height
The answer is 12.56
24.492, unless you want more digits of pi besides the standard 3.14. The circumference of a circle is equal to the diameter multiplied by pi, or the radius multiplied by two, then multiplied by pi. c = d*pi c = 2*r*pi c = circumference d = diameter r = radius pi = 3.141593
pi multiplied by r squared multiplied by height
60 cm x pi = 188,5 cm
785.398163397, or, in terms of pi: 250pi
Do you mean volume or surface area? volume = 4/3 x pi x r^3 (four divided by three, multiplied by pi, multiplied by radius cubed). surface area = 4 x pi x r^2 (four multiplied by pi, multiplied by radius squared).
8.53973 (rounded)
25.12 dah
Pi multiplied by the Diameter.
Maybe. It depends on the number that you are multiplying. Pi multiplied by (1 / 4pi) = 1/4. A quarter is definitely rational.