Question

it is required to make a closed cylindrical tank of height 1 m and base diameter 120 cm from a metal sheet how many square metres of the sheet are required for the same

Answer 1

sheet required = total surface area

we have h=1m     and r=0.6m i.e 6/10

total surface area of cylinder=2πr(h+r)

                              2x 22/7x6/10(1+0.6)

                          =2*17*3*166/175

                               =6.03cm square

Answer 2

Answer: 6.03328

Step-by-step explanation:

height=1m, diameter base 120cm,

radius=120/2=60cm

we know that:1m=100cm

height=1m=1*100=100cm

Surface area of cylinder=2πr(r+h)

Surface area of cylinder

=2*22/7*60cm(60cm+100cm)

=60332.8cm^2

convert: 60332.8cm^2 into m

so, 60332.8/10,000 m

=6.03328m