It is required to make a closed cylindrical tank of height 1 m and base diameter 140 cm from a metal sheet how many square metre of sheet are required for the same.
Answers
Answered by
14
Hello mate , ☺
Your answer:-
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Height of closed cylindrical tank ,h=1 m
Base diameter of cylindrical tank =d=140 cm
=140/100
=1.4 m
⇒ Radius of cylindrical tank ,r
=d/2
=1.4/2
=0.7 m
Total surface area of cylindrical tank
=2πr(r+h)=2×22/7×0.7(0.7+1)
=2×22/7×0.7×1.7
=7.48 m^2
I hope, this will help you.☺
Thank you______❤
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Answered by
6
total area of tank = surface area of cylinder + 2 × cross section area of tank
= 2πrL + 2πr²
= 2πr ( L + r)
Given,
diametre of base = 140 cm
radius of base (r) = 70cm
height of tank (L) = 1 m = 100 cm
total area = 2πr(L + r)
= 2 × 22/7 × 70 × ( 100 + 70)
= 20 × 22 × 170 cm²
= 74800 cm²
= 7.48 m²
hence, 7.48 m² sheets are required for the making tank
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