The volume of the prism is determined as 1,416 m³ and the surface area of the prism is 664.8 m².
Volume of the prism
The volume of the prism is determined from the product of base area and slant height of the prism.
Base of the prism, A = ¹/₂bh = ¹/₂ x 12 x 20 = 120 m²
Volume = AL
where;
L² = (12/2)² + (20.3/2)²
L² = 6² + 10.15²
L² = 139.0225
L = 11.8 m
V = AL
V = 120 x 11.8 = 1,416 m³
Surface area of the prism
A = bh + pL
A = (12 x 20) + 11.8(12 + 12 + 12)
A = 664.8 m²
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