The arm of a ceiling fan measures a length of 25 in. What is the area covered by the motion of the fan blades when turned on?

The area of 1963.46 square inches covered by the motion of the blades when turned on.

Step-by-step explanation:

The given is,

                    The arm of a ceiling fan measures length of 25 inches.

Step:1

                   When the fan turned on it makes a rotation of blades. It is in the circular form.

                   Formula to calculate the area of circle,

                                                    ...................................(1)

                   Where, r - Radius of circle

                   From the given values,

                         Length of fan arm = r = 25 inches

                   Equation (1) becomes,

                                                         = 1963.49

                                                         = 1963.49 square inches

                    Area covered by fan = 1963.49 square inches

Result:

            The area of 1963.46 square inches covered by the motion of the blades when turned on.  

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.

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