Find the lateral surface area and total surface area of a cuboid of le

1.	Find the lateral surface area and total surface area of a cuboid of length 80 cm, breadth 40 cm and height 20 cm.
Answer» Given, Dimensions of a cuboid: Length (l) = 80 cm Breadth (b) = 40 cm Height (h) = 20 cm We know that, Total Surface Area = 2[lb + bh + hl] = 2[(80)(40)+(40)(20)+(20)(80)] = 2[3200+800+1600] = 2[5600] = 11200 Therefore, Total Surface Area = 11200 cm² Now, Lateral Surface Area = 2[l + b]h = 2[80+40]20 = 40[120] = 4800 Thus, Lateral Surface Area is 4800 cm².

Find the lateral surface area and total surface area of a cuboid of length 80 cm, breadth 40 cm and height 20 cm.

Answer»

Given, Dimensions of a cuboid:

Length (l) = 80 cm

Breadth (b) = 40 cm

Height (h) = 20 cm

We know that,

Total Surface Area = 2[lb + bh + hl]

= 2[(80)(40)+(40)(20)+(20)(80)]

= 2[3200+800+1600]

= 2[5600]

= 11200

Therefore, Total Surface Area = 11200 cm²

Now, Lateral Surface Area = 2[l + b]h

= 2[80+40]20

= 40[120]

= 4800

Thus, Lateral Surface Area is 4800 cm².