What is the sum, in inches, of diameters G, H, and N?

What is the sum, in inches, of diameters G, H, and N?

• A. 6 in.
• B. 6 1/2 in.
• C. 7 in.
• D. 8 in.

Answer: (B)

Sum of diameters is simply the total of the three full widths shown for G, H, and N. Each diameter runs straight across its circle through the center, so you add the actual diameter lengths together. In this diagram, the three diameters add up to 6 1/2 inches, so the sum is 6 1/2 inches. If you accidentally used radii (half the diameter) you’d get a smaller number, which wouldn’t match the diagram’s measurements.

Sum of diameters is simply the total of the three full widths shown for G, H, and N. Each diameter runs straight across its circle through the center, so you add the actual diameter lengths together. In this diagram, the three diameters add up to 6 1/2 inches, so the sum is 6 1/2 inches. If you accidentally used radii (half the diameter) you’d get a smaller number, which wouldn’t match the diagram’s measurements.