Final answer:
To find the area of a circular porthole with a 14 inch diameter, calculate the radius (7 inches) and use the area formula A = πr², resulting in approximately 154 square inches when rounded to the nearest square inch.
Step-by-step explanation:
The question asks for the area of glass covered by a 14 inch diameter circular porthole. To find the area of a circle, the formula is A = πr², where 'A' is the area and 'r' is the radius of the circle. First, we calculate the radius by halving the diameter. Since the diameter is 14 inches, the radius is 7 inches. Then, we plug this value into the formula to calculate the area.
Using the formula, the area of the circular porthole is:
A = π × (7 inches)²
A = π × 49 inches²
A = 153.93804 inches²
Rounding to the nearest square inch, the area of the glass is approximately 154 square inches.