Question

1. find the area. use 3.14 for pi and round your answer. 20.5 ft

Explanation:

Step1: Calculate the radius

The radius $r$ is half the diameter.
$r = \frac{20.5}{2} = 10.25$ ft

Step2: Apply area formula

Use the circle area formula $A = \pi r^2$, substitute $\pi=3.14$ and $r=10.25$.
$A = 3.14 \times (10.25)^2 = 3.14 \times 105.0625$

Step3: Compute final value

Multiply the numbers to get the area.
$A = 329.89625$

Answer:

329.90 square feet (rounded to two decimal places)