511/8-243/4
511/8-486/8=25/8
Answer:
When you move the decimal point one place to the left, you are moving the second by a factor of 10.
Step-by-step explanation:
Answer:
Step-by-step explanation:
The formula for the length of an arc is s = rФ.
Thus, the arc length of a semicircle is S = rФ/2.
Here the radius is 5 (half the diameter), and so in this case the arc length is
S = (5 units)π/2, or S = (5/2)(3.14) units, or approximately S = 7.85 units