Question

The surface area of cuboid-shaped box having length=80 cm, breadth=40cm and height=20cm is:

• A. 9600 sq.cm
• B. 10400 sq.cm
• C. 11200 sq.cm
• D. 12800 sq.cm

Answer 1

Answer:

C. 11200 sq.cm

surface area of the box = 2(lb + bh + hl) S.A. = 2[(80 × 40) + (40 × 20) + (20 × 80)] = 2[3200 + 800 + 1600] = 2 × 5600 = 11200 sq.cm.