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.  

the answer is the option b

the range is all real numbers

step-by-step explanation:

we know that

the absolute value parent function is equal to

see the attached figure to better understand the problem

so

a. it is v-shaped > is true

b. the range is all real numbers > is not true

because the range is the > [0,∞)

all real numbers greater than or equal to zero

c. it goes through the origin > is true

d. the domain is all real numbers > is true

step-by-step explanation:

24

step-by-step explanation:

the graph shows 30% of students walk. 80 students were questioned, so the number that said they walk is

30% × 80 = 0.30 × 80 = 24