Question

the surface area of a cuboid is 468 cm2 . it's length and breath are 12 cm and 9 cm respectively. find its height.

Answer 1

2(12.9)+2(12.h)+2(9.h)=468
216+24h+18h=468
so,h=6

Answer 2

The height of the cuboid is 6 cm.

• The length and breadth of the cuboid is 12 cm and 9 cm.

• Surface area of the cuboid is 468 cm².

• Formula to find the surface area is 2(lb+bh+hl).

• Substituting the values we get,

2(lb+bh+hl) = 468

2(12.9+12.h+9.h) = 468

(12.9+12.h+9.h) = 234

21h = 234 - 108 = 126

h = 6 cm

• The height of the cuboid is 6 cm.