Having the angle in radians and the diameter of the circle we can easily calculate the length using the following expression
Length = angle(radians)*diameter/2
With this expression we can easily deduce the perimeter of a circle (length of the full arc)
Length = Perimeter = 2*pi*r
There is only one operation involved in this process
4,000*10= 40,000 which is forty thousands which is also 4 ten thousands
Answer:
d
i did the test
Step-by-step explanation:
