Answer:
A bar notation
Step-by-step explanation:
the line is called a bar notation
A four-inch part is connected around the hot water heater as to expand. So d = 20 + 4 + 4 = 28 inches.
The area of a circle is A = <span>π(d/2)^2
A = </span><span>π(28/2)^2 = 3615.7521... inches = 3620 inches (rounded to the nearest tenth)</span>
Hope this helps I guess if not I’m sry
I dont get it...could you send a pic..