Mrs.penn has a circular tablecloth with a circumference of 29 feet. Which expression could be used ro find the radius of the tablecloth?
f. 29 - 2 pie
g. 29/2 pie
h. 29/pie
j 29 + 2pie
The formula for the circumference of a circle is C=2(pi)r. If we divide both sides by 2(pi) we have:
C/2(pi)=r
Substituting 29 for C we have:
29/2(pi)=r
and therefore the correct answer would be "g."
To find the radius of a circle given its circumference, you can use the formula:
Circumference = 2 * π * radius
In this case, the given circumference is 29 feet. So, we can rearrange the formula to solve for the radius:
radius = Circumference / (2 * π)
Now let's evaluate each expression using this formula:
f. 29 - 2π:
This expression does not follow the correct formula for finding the radius.
g. 29/2π:
This expression represents the incorrect calculation for finding the radius.
h. 29/π:
This expression accurately represents the formula for finding the radius. Dividing the given circumference of 29 feet by 2π will give you the radius of the circular tablecloth.
j. 29 + 2π:
This expression does not follow the correct formula for finding the radius.
Therefore, the correct expression to find the radius of the tablecloth is h. 29/π.