The moment of inertia of a triangular section (height h, base b) about its base, is

• A. <img src="/_files/images/civil-engineering/theory-of-structures/86-21-64-1.png">
• B. <img src="/_files/images/civil-engineering/theory-of-structures/86-21-64-2.png">
• C. <img src="/_files/images/civil-engineering/theory-of-structures/86-21-64-3.png">
• D. <img src="/_files/images/civil-engineering/theory-of-structures/86-21-64-4.png">