Question

Find length of rectangular sheet of width 20 cm to make a cylinder which requires a paint of cost rupees 2200 . If the rate of paint is rupees 25 per hundred cm^² and 10% paint is wasted​

Answer 1

Answer:

396cm

Step-by-step explanation:

w=20cm

total cost of paint=2200

cost of 1cm^2=0.25

so,

0.25*x+220=2200

x(area)=7920cm^2

length=396cm