Question

calculate the circumference of the circle described. use π = 3.14 and round to the nearest hundredth. the diameter of a circle is 6 centimeters. the formula for the circumference of a circle is c = πd, where c is the circumference and d is the diameter. 3.14(6) = 18.84 the circumference of the circle is 18.84 centimeters. the radius of a circle is 21 inches. > enter the answer in the space provided. use numbers instead of words. inches

Explanation:

Step1: Recall the circumference formula

The formula for the circumference of a circle is $C = 2\pi r=\pi d$, where $r$ is the radius and $d$ is the diameter. Given $r = 21$ inches and $\pi=3.14$.

Step2: Substitute values into formula

Since $d = 2r$, then $d=2\times21 = 42$ inches. Using $C=\pi d$, we substitute $\pi = 3.14$ and $d = 42$ inches. So $C=3.14\times42$.

Step3: Calculate the circumference

$3.14\times42=(3 + 0.14)\times42=3\times42+0.14\times42=126 + 5.88=131.88$ inches.

Answer:

131.88