# A circle has a circumference of 48π centimeters. If the radius of the circle is multiplied by 9, what is the circumference of the new circle? Question
Circles A circle has a circumference of $$\displaystyle{48}π$$ centimeters. If the radius of the circle is multiplied by 9, what is the circumference of the new circle? 2021-02-22
Use the formula for the circumference of a circle: $$\displaystyle{C}={2}π{r}$$
Let r be the radius of the original circle so that: $$\displaystyle{2}π{r}={48}π$$
$$\displaystyle{r}={48} ### Relevant Questions asked 2020-11-29 The formula \(C=2\pi r$$ relates the circumference C of a circle to its radius r.
(a)Solve $$C=2\pi r$$ for r
(b) If a circle's circumference is 15 inches, what is its radius? leave the symbol $$\pi$$ in your answer. [Pic] This arch is formed by an arc of a circle. What is the radius of the circle?
A. 1.500 m
B. 1.875 m
C. 3.000 m
D. 3.750 m what is the equation of a circle with the center (2, -4) and the radius 4. What is the area of a circle with a radius of 8 inches? Find the area of sector AOB if the radius of circle O is 12 cm. Give the answer in terms of π. Find the circumference of a circle with diameter 2/п.    