Because the circumference of any circle divided by its diameter is equal to the value of pi which is an irrational number.
Because the circumference of a circle divided by its diameter is equal to pi.
the other formulas involve non-circular shapes
Although it is different for pretty much each shape, the basic answer is just that you add up the sides. For circular shapes the formula is: Pi X Radius to the 2nd power
assuming the island is circular.... use the formula Area=(pi)x(radius squared) to find the radius, then use the formula C=2(pi)(radius) to determine the circumference.
3.14
the other formulas involve non-circular shapes
pi * radius2 * height
use the formula 2(pi)r=16pi use the formula 2(pi)r=16pi use the formula 2(pi)r=16pi use the formula 2(pi)r=16pi use the formula 2(pi)r=16pi
use the formula 2(pi)r=16pi use the formula 2(pi)r=16pi use the formula 2(pi)r=16pi use the formula 2(pi)r=16pi use the formula 2(pi)r=16pi
Pi x r² x h
Pi x r² x h
The surface area ( A ) of a cylinder can be calculated using the formula ( A = 2\pi r(h + r) ), where ( r ) is the radius of the circular bases and ( h ) is the height of the cylinder. This formula includes the areas of the two circular bases (( 2\pi r^2 )) and the lateral surface area (( 2\pi rh )).