Question

A box has Length_36cm, breadth 30 cm
and height 40 cm. find the cost of
painting it from outside at the rate
5 paise per cm².​

Answer 1

Length = 36 cm

breadth = 30 cm

height = 40 cm

total surface area = 2 (lb + bh + lh)

= 2(36×30+30×40+36×40)

= 2 × 3720

= 7440cm^2

rate = paise 5/ cm^2

cost = Rs (7440 × 5 )

= 37200 paise = 37200\100= 372 rupees