Question

It is required to make a closed cylindrical tank of height 1 mand base diameter 140 cm
from a metal sheet. How many square metres of the sheet are required for the same​

Answer 1

Answer:

anwer is 7.48 m^2

Step-by-step explanation:

given that, height=1m, diameter=140cm,radius= d÷2,140÷2=70 cm or 70÷100= 0.7m total surface area of cylinder =2πr(r+h) , 2×22÷7×0.7(0.7+1) =2×22÷7×0.7×1.7=7.48m^2. hence, sheet required to make closed cylinder is 7.48 m^2

Answer 2

hope it's help u..............