1. **Problem:** Find the volume and surface area of a cuboid with dimensions 12 cm × 5 cm × 3 cm. 2. **Formulas:** - Volume of cuboid: $$V = l \times w \times h$$ - Surface area of cuboid: $$SA = 2(lw + lh + wh)$$ 3. **Calculate volume:** $$V = 12 \times 5 \times 3 = 180\text{ cm}^3$$ 4. **Calculate surface area:** $$SA = 2(12 \times 5 + 12 \times 3 + 5 \times 3)$$ $$= 2(60 + 36 + 15)$$ $$= 2(111) = 222\text{ cm}^2$$ 5. **Answer:** - Volume = 180 cm³ - Surface area = 222 cm² This completes the solution for the first problem.