Subjects geometry

Cuboid Surface Area 722A81

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1. **Problem Statement:** Find the surface area of the first cuboid with dimensions 4 cm by 4 cm by 7 cm. 2. **Formula:** The surface area $A$ of a cuboid with length $l$, width $w$, and height $h$ is given by: $$A = 2(lw + lh + wh)$$ 3. **Substitute values:** $$A = 2(4 \times 4 + 4 \times 7 + 4 \times 7)$$ 4. **Calculate each product:** $$4 \times 4 = 16$$ $$4 \times 7 = 28$$ $$4 \times 7 = 28$$ 5. **Sum inside parentheses:** $$16 + 28 + 28 = 72$$ 6. **Multiply by 2:** $$A = 2 \times 72 = 144$$ 7. **Answer:** The surface area of the first cuboid is $144$ cm². --- Since the user asked for multiple cuboids but per instructions we solve only the first, we stop here.