Final answer:
To find the square inches of material in the engine enemies, we need to calculate the area of the circular enemies using the formula A = πr².
Step-by-step explanation:
To find the square inches of material in an engine, we need to calculate the area of the circular enemies.
First, we find the radius of the engine enemies by dividing the diameter (12 inches) by 2, giving us a radius of 6 inches.
Next, we can use the formula for the area of a circle, A = πr², where A is the area and r is the radius. Plugging in the value, we get:
A = π x (6 inches)² = 36π square inches.
Therefore, there are 36π square inches of material in the engine enemies. Using an approximate value for π, which is 3.14, the total square inches would be approximately 113.04 square inches.