Question

a segmental paver is installing a circular patio that has a radius of 12 feet. how much edging material will be needed for the circumference of the patio (to the nearest tenth)? (use 3.14 for pi.) a) 37.68 feet b) 75.4 feet c) 150.72 feet d) 452.16 feet

Explanation:

Step1: Recall the circumference formula

The formula for the circumference \( C \) of a circle is \( C = 2\pi r \), where \( r \) is the radius. Here, \( r = 12 \) feet and \( \pi \approx 3.14 \).

Step2: Substitute the values into the formula

Substitute \( r = 12 \) and \( \pi = 3.14 \) into \( C = 2\pi r \):
\( C = 2 \times 3.14 \times 12 \)

Step3: Calculate the result

First, calculate \( 2 \times 3.14 = 6.28 \). Then, \( 6.28 \times 12 = 75.36 \). Rounding \( 75.36 \) to the nearest tenth gives \( 75.4 \).

Answer:

B) 75.4 feet