Question

a closed cylindrical water tanks is made from a plastic sheet it's diameter is 1.4 m and height 3.5 m find
1) the lateral surface area of tank
2) actual area of plastic sheet used if 1/13 of the sheet wasted in making the tank ​plzz give correct explaination ​

Answer 1

here is your answer

hope it will help u

Answer 2

• CSA =2πr

=2*22\7*0.7*3.5

• TSA of plasticuse=CSA+wastage =15.4+1\13*15.4

=16.58