Question

Find the length of paper whose width is 11 cm is required to cover only the curved surface of cylinder diameter 10.5 cm and length 20 cm . *​

Answer 1

Step-by-step explanation:

C.S.A = 2 × 22/7 × 10.5/2 × 20 sq. cm = 660 sq. cm

Now, width of paper = 11 cm

Area of paper = 660 sq. cm

Length of paper = 660÷11 cm = 60 cm