Answer:
A = π9mi² or A = 28.3mi²
Step-by-step explanation:
Kim posting within a 3-mile RADIUS, means she will post within a circle with her house at the centre.
The formula for area of a circle is A = πr²
Substitute the radius and solve.
A = πr²
A = π(3mi)² Square the miles and square the 3
A = π9mi² Exact answer
A = 28.27.....mi² Exact answer in decimals
A ≈ 28.3mi² Answer rounded to one decimal place
Therefore Kim is searching in a 28.3mi² region.
