400 multiplied by 3.14 is 1,256
V of a circular slab = thickness of the slab multiplied by (pi multiplied by the radius2)
Formula for area: A = Pi*R² (Pi = 3,1416 and R² is the radius multiplied by itself) Formula for circumference: C + Pi*D (D is diameter) Formula for Diameter: D = 2*R (radius multiplied by 2))
Circumference = Diameter multiplied by Pi Diameter = Circumference divided by pi Radius = Diameter divided by 2.
Area of a circle = pi times radius squared
60cm 12 multiplied by 5cm is the same as 6 multiplied by 10cm, as 12 divided by 2 equals 6, and 5cm multiplied by 2 equals 10cm. 6 multiplied by 10cm equals 60cm. That theory is called doubling and halving.
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
449184.53
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
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)
Pi multiplied by the Diameter.
25.12 dah