Question

Among the objects that have equal length, breadth and height, the least surface area is of

• A. Sphere
• B. Cube
• C. Cone
• D. Cylinder

Hint:

A sphere has the least surface area for a given volume when compared to other 3D objects.

Answer 1

The Correct Option is A

Step 1: Understanding the problem.
A sphere, among the shapes with equal length, breadth, and height, will have the least surface area due to its symmetry and smooth surface.
Step 2: Analysis of options.
- (A) Sphere: This is the correct answer. A sphere has the least surface area for a given volume compared to other shapes with the same dimensions.
- (B) Cube: The cube has more surface area compared to a sphere.
- (C) Cone: A cone will have more surface area than a sphere.
- (D) Cylinder: The cylinder also has more surface area than a sphere.

Step 3: Conclusion.
Thus, the correct answer is (A) Sphere.