Question

Marcia is placing a fence around the circular flower bed in her garden. The diameter of the flower bed is 3 feet. How much fencing should Marcia use? Use 3.14 for π. Round to the nearest tenth if necessary.

Incorrect Work/Solution:
d = 3 → -1.5
A - A = 1 (1.5)^2
A = (3.14)(2.25)
A - 7.065
A = 7.1
Marcia needs to use 7.1 square feet of fencing.

Correct Work/ Solution:
Calculate the correct amount of fencing Marcia needs.

Answer 1

To calculate the amount of fencing Marcia needs, use the formula C = πd, where d is the diameter of the circular flower bed. In this case, the diameter is 3 feet, so Marcia needs 9.42 feet of fencing.

Step-by-step explanation:

To calculate the amount of fencing Marcia needs, we need to find the circumference of the circular flower bed.

The circumference of a circle is given by the formula C = πd, where d is the diameter. In this case, the diameter is 3 feet, so the circumference is C = 3.14 x 3 = 9.42 feet.

Therefore, Marcia needs 9.42 feet of fencing to enclose the circular flower bed.