Question

find the cost of colour of cuboidal box with measurements 6cm×5cm×4cm where cost of colour per sq m is rs.2.50

Answer 1

Total area of box = l×b×h
= 6 × 5 ×4
=120 cm^2
=120/10000 m^2
=0.012 m^2
Cost of painting 1 m^2= 2.5
Total cost of painting = 2.5 × 0.012
= 0.3 rupees

Answer 2

area of cuboidal box = 6×5×4
= 120 cm ^2
cost of colour = 2.50 per sq m

then

120 cm^ 2 convert into metre^2


120cm^2 = 0.012 m^2


total cost of 0.012× 2.50 = 0 .03

hope its help you