Length, breadth and height of a cuboid shape box of medicine is 20 cm, 12 cm and 10 cm respectively. Find the surface area of vertical faces and total surface area of this box.

Open in App

Solution

Lenght of the box, l = 20 cm

Breadth of the box, b = 12 cm

Height of the box, h = 10 cm

∴ Surface area of the vertical faces of the box

= 2(l + b) × h

= 2(20 + 12) × 10

= 2 × 32 × 10

= 640 cm²

Also,

Total surface area of the box

= 2(lb + bh + hl)

= 2(20 × 12 + 12 × 10 + 10 × 20)

= 2(240 + 120 + 200)

= 2 × 560

= 1120 cm²

Thus, the surface area of vertical faces and total surface area of the box is 640 cm² and 1120 cm², respectively.

Suggest Corrections

Similar questions

A box has length, breadth and height of 10 cm,20 cm and 5 cm respectively. The lateral surface area of cuboid is:

A box has length, breadth and height of 10 cm, 20 cm and 5 cm respectively. The lateral surface area of the box is 200 $c m^{2}$ .

15 c m, 12 c m

10 c m

Join BYJU'S Learning Program