Question

answer the following question please​

Answer 1

Answer:

Rs. 5,544

Step-by-step explanation:

CSA of Cylinder = 2πrh   ---[Formula]

Diameter (d) = 21   ---[given]

Radius (r) = 21/2   ---[d/2 = r]

Height (h) = 42   ---[given]

Substituting the above in the Formula

CSA = 2* 22/7 * 21/2 * 42

= 2,772 cm²

Given: Cost of painting 1cm² = Rs. 5

So For painting 2,772 cm² = 5*(2,772)

= Rs. 5,544

Hope u understood!

Have a Great Day!

Answer 2

Answer:

Rs.13860

Step-by-step explanation:

Curved surface area of the cylinder=2*22/7*42=2772cm*cm

Therefore cost of painting there cylinder=2772*5=13860