A cuboid has length 7 cm, breadth 3 cm, and height 4 cm. Its surface area is:
Show answer & explanation
Correct answer: A
Explanation
Length = 7 cm, Width = 3 cm, Height = 4 cm
According to the formula: Surface Area = 2(lb + bh + hl)
= 2(7×3 + 3×4 + 4×7)
= 2(21 + 12 + 28)
= 2 × 61 = 122 cm²