Question

Find the total surface area of the cuboid with 1=4cm,3m and h=1.5

Answer 1

l=4cm
b=3m= 3/100cm
h=1.5cm
total surface area of cuboid = 2×(lb+bh+hl)
= 2(4×3/100+3/100×1.5+1.5×4)
= 2(12/100+4.5/100+6)
= 2(12+4.5+600/100)
= 2×616.5
= 12.33cm square