Question

In a toy factory 200 wooden c
CB closed cylinder of diameter 35mm and height 7cm have to be painted. What is the total surface area in cm square that needs to be painted?(take radius to be 3.142

Answer 1

Step-by-step explanation:

TSA of each cylinder= 2πr(h+r)

                                  =2*3.142*3.5/2(7+3.5/2)    (r=35/2 mm=3.5 /2 cm)

                                  =40.2395 cm²

Total No. of cylinders=200

Total surface of all the cylinders=40.2395*200

                                                     =    8047.9 cm²

I hope this helps you