Question

find the volume and the total surface area of a cuboid length 3.5 M breadth 2.6 M and height 90cm

Answer 1

volume of a cuboid =
l x b x h
= 3.5 x 2.6 x 0.9
= 8.19 m3 

Total surface area of a cuboid
= 2(l x b + b x h + h x l)

= 2 (3.5 x 2.6 + 2.6 x 0.9 + 0.9 x 3.5)
= 2 (910 + 2.34 + 3.15)
= 2(14.59)
= 29

Answer 2

length of cuboid = 3.5 m
breadth of cuboid = 2.6 m
height of cuboid = 90 m
Volume of cuboid = l*b*h = 819 m³
Total surface area of cuboid = 2(lb+bh+hl)
2(3.5*2.6+2.6*90+90*3.5)
= 567.2 m²

Hope it may help you