Question

what is the approximate area of the circle shown below?
80 in
a. 126 in²
b. 20,106 in²
c. 251 in²
d. 5027 in²

Explanation:

Step1: Identify the radius

The line from center O is the radius: $r = 80$ in.

Step2: Apply area formula

Area of circle: $A = \pi r^2$. Use $\pi \approx 3.1416$.
$$A = 3.1416 \times 80^2 = 3.1416 \times 6400 \approx 20106$$

Answer:

B. 20,106 in²