Curved surface area of a hemisphere, diameter 28 cm: Find the curved surface area (in cm²).

Introduction / Context:The curved surface area (CSA) of a hemisphere depends only on the radius via CSA = 2πr^2.

Given Data / Assumptions:

• Diameter = 28 cm ⇒ r = 14 cm.

Concept / Approach:Apply CSA = 2πr^2 directly and evaluate numerically.

Step-by-Step Solution:

Verification / Alternative check:Using π ≈ 3.1416 gives ≈ 1231.5, which rounds to 1232.

Why Other Options Are Wrong:1152, 1024, 956 do not equal 392π.

Common Pitfalls:Using sphere area 4πr^2 or including the base area; only curved area is asked.

Final Answer:1232.