Category: Everyday Science | Last updated: 2026-09-18

The moment of inertia of a solid circular cross-section about its centroid is:

A) πd⁴/32

B) πd⁴/64

C) πd²/4

D) πd³/32

Explanation

I = πd⁴/64 for a solid circle. This property governs bending resistance.

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