Final answer:
To find the area of a circle with a 9-inch radius, use the formula A = πr², resulting in approximately 254.47 square inches when π is approximated as 3.14159.
Step-by-step explanation:
The question asks for the area of a circle with a known radius, which is a mathematical concept. To find the area of a circle, we use the formula A = πr², where π (pi) is approximately 3.14159 and 'r' is the radius of the circle. Given that the radius (r) is 9 inches, we plug this value into our formula:
A = π × (9 inches)²
Calculating the area:
A = 3.14159 × 81 square inches
A = 254.469 square inches
However, in practice, we often round our result to a reasonable number of significant figures based on the precision of the given values. Since the radius was given as 9 inches, which has one decimal place of precision, we could round the area to two decimal places:
A ≈ 254.47 square inches