Question

Select the correct answer from each drop-down menu to rewrite the formula for the area of a circle to find the radius of a circle.

The formula to find r is ___. If A = 54 centimeters and pi = 22/7, r is ___ centimeters.
Dropdown 1: ( r = √A/pi )
Dropdown 2: ( r = √54/22/7 )

Answer 1

The formula to find the radius of a circle is r = √(A/pi). Given A = 54 centimeters and pi = 22/7, the value of r is approximately 3.644 centimeters.

Step-by-step explanation:

The formula to find the radius of a circle is r = √(A/pi). In this formula, A represents the area of the circle, and pi represents the value of pi, which is approximately equal to 22/7. To find the value of r using this formula, simply substitute the given values into the formula and solve.

Given: A = 54 centimeters and pi = 22/7

Substitute the values into the formula: r = √(54 / (22/7))

Simplify the expression: r = √(54 * (7/22))

Calculate the value: r = √(189/22)

The final value of r is approximately 3.644 centimeters.