Question

I need help on a problem that's on formula for circumference. A circle has a circumference of 36 cm. find it's radius .but it says give an exact answer in simplest form and it says enter pi for the symbol of pie .
Ms. Sue
C = pi * r^2

36 = 3.14 * r^2

36/3.14 = r^2

11.464968 = r^2

3.3859958 = r

Related Questions

The diameter of this circle is 2 meters. Find the circumference of this circle. Leave your answe... Pi is defined as the ratio of the circumference of a circle to the diameter of that circle. Which of... To find the diameter of a circle with an approximate circumference of **7,459 miles**, we can use th... The formula for the circumference of a circle is: C equals 2 pi r.   C is the circumference and r...