Question

Isaac is also designing a circular serving tray that he plans to engrave around the edge. The serving tray has an area of 3.14 square feet. Using 3.14 for , what is the circumference of the serving tray rounded to the nearest hundredth?

Answer 1

Answer:

6.28 feet

Step-by-step explanation:

1.) Find the radius.

The area is given, and the formula for area of a circle is A = $\pi r^{2}$  Let's substitute.

3.14 = $\pi r^{2}$

Divide by pi on both sides

1 = $r^{2}$

Find the square root of r

1 = r

The radius is 1.

2.) Find the circumference.

C = $2\pi r$

C = $2\pi (1)$

Multiply 2 and 1

C = $2\pi$

C ≈ 6.28

The circumference is approximately 6.28 feet.