Volume of cylinder: V column =Sh =πr? h = 1/4πd = 1/4 * 1/3. 14 * C？ *h= 1/2 *S side *r
π is pi, which is generally 3.14; R is the radius volume of the cylinder bottom surface; H is the height of the cylinder; It can also be v= 1/2ch×r, half of lateral area× radius.
Pi (π) is the ratio of the circumference to the diameter of a circle, which is generally expressed by the Greek letter π and is a universal mathematical constant in mathematics and physics. π is also equal to the ratio of the area of a circle to the square of its radius. Accurate calculation of geometric shapes such as circle perimeter, circle area and sphere volume is the key value. In the analysis, π can be strictly defined as the smallest positive real number x satisfying sinx= 0.