Find the radius of a circle with the circumference of 94.25cm correct to the nearest cm?
Circumference = 2pi(r)
so
2pi(r) = 94.25
r = 94.25/2pi
= 15
Is a radius achord?why?
To find the radius of a circle with a given circumference, you can use the formula:
C = 2πr
where C represents the circumference and r represents the radius.
In this case, we are given the circumference as 94.25 cm. Plugging this value into the formula:
94.25 = 2πr
To find the radius, we need to isolate the r term. Divide both sides of the equation by 2π:
r = 94.25 / (2π)
Using a calculator or an approximation of π (such as 3.14), we can then evaluate this expression to find the value of the radius (rounded to the nearest cm):
r ≈ 94.25 / (2 * 3.14)
r ≈ 15.03 cm
Therefore, the radius of the circle with a circumference of 94.25 cm is approximately 15 cm.