A rectangular sheet of paper of dimensions 66cm×15cm is rolled along its length to form a cylinder. Find the total surface area of the cylinder. 

 

Asked by Cl_narayan | 19th Jul, 2019, 10:00: PM

Expert Answer:

Circumference space equals space 66 space cm
2 πr equals 66
straight r equals 10.5 space cm
TSA space equals space 2 πr squared plus 2 πrh
equals 2 cross times 22 over 7 cross times 10.5 squared plus 2 cross times 22 over 7 cross times 10.5 cross times 15 equals 1683 space cm squared

Answered by Arun | 21st Jul, 2019, 11:19: AM