it is required to make a closed cylindrical tank of height 1m and base diameter 140 cm from a metal sheet. how many square meters of the sheet are required for the same????????
Answers
Answered by
11
Given diameter = 140cm, then the radius will be 70cm = 0.7m.
Area of a sheet required = 2pir(r+h)
= 2 * 22/7 * 0.7(0.7 + 1)
= 2 * 22 * 0.1(1.7)
= 7.48m^2.
Hope this helps!
Area of a sheet required = 2pir(r+h)
= 2 * 22/7 * 0.7(0.7 + 1)
= 2 * 22 * 0.1(1.7)
= 7.48m^2.
Hope this helps!
Answered by
3
its so simple, first convert cm in m and then apply the formula of total surface area of cylinder:
h=1m
d=140cm=1.4m
r=1.4/2=0.7m
T.S.A. of cylinder=2πr(r+h)
=2×22/7×0.7(0.7+1)
=44/7×7/10(1.07)
=44/10×1.07
=47.08/10
=4.708m^2
h=1m
d=140cm=1.4m
r=1.4/2=0.7m
T.S.A. of cylinder=2πr(r+h)
=2×22/7×0.7(0.7+1)
=44/7×7/10(1.07)
=44/10×1.07
=47.08/10
=4.708m^2
Similar questions