Question

If the length, breadth, and height of a cuboidal block are 15 ft, 12 ft, and 12 ft respectively, find the total surface area of the block.

• A. 1008 cm${}^2$
• B. 504 cm${}^2$
• C. 1548 cm${}^2$
• D. 1220 cm${}^2$

Answer 1

The correct option is A 1008 cm${}^2$

Given: Length = 15 ft, breadth = 12 ft, height = 12 ft

Total surface area of cuboid = 2[lb + bh + hl]
Total surface area of the block = $2[15\times 12+12\times 12+12\times 15]$
Total surface area of the block = 2[180 + 144 + 180]
Total surface area of the block = 2[360 + 144]
Total surface area of the block = 2[504] = 1008 cm${}^2$