Cubic calculation formula of cylinder

Cylinder volume =π r? H=s bottom

Find the bottom area first, and then multiply it by the height.

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.

Diameter of circle =2× radius; Diameter of a circle = circumference/pi. According to the conditions given in the title, the calculation method is different under different conditions. For example, given the circumference or radius of a circle, the diameter of the circle can be calculated.

Calculation of correlation

Radius of circle: r

Diameter: d

Pi: π (the numerical value is between 3. 14 15926 and 3. 14 15927 ... infinite cyclic decimal), and 3. 14 is usually used as the numerical value of π.

Area of circle: S=πr? ; S=π(d/2)？