Question

Find the surface area of a cuboid be length equals to 60mm breadth equals to 40mm height equals to 55mm

Answer 1

Step-by-step explanation:

Total surface area of Cuboid = 2 (lb+bh+lh)

= 2(60×40+40×55+60×55)

=2(2400+2200+3300)

=2×7900

=15800

hence answer is 15800 sq. mm