Allied & ICAR Exam Bank • ALLIED_1959 MCQ • 2 Marks

Section 8: General Aptitude

Analytical & Spatial Aptitude

Subtopic: Spatial Reasoning & 3D Representations

Question Statement:

A grain storage silo consists of a cylindrical bin of diameter 4 m and height 10 m. What is the area (in m^2) of sheet metal required to fabricate its curved cylindrical shell (excluding roof and floor)? (Take pi = 3.1416)

Options:

  • (A) 125.66 m^2
  • (B) 62.83 m^2
  • (C) 251.33 m^2
  • (D) 150.80 m^2

Answer Key:

A

Step-by-Step Solution & Explanation

Curved surface area = pi * D * H = 3.1416 * 4 * 10 = 125.66 m^2.
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