Hi there!
• Length, l = 20 yd.
• Width, w = 17 yd.
• Height, h = 19 yd.
Total surface area of cuboid = 2 (l + w) × h
= 2 (20 + 17) × 19 yd²
= 2 (37) × 19 yd² = 74 × 19 yd² = 1, 406 yd²
Hence,
The 4ᵗʰ Option : 1, 406 yd² is Correct.
~ Hope it helps!
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