a closed cylindrical tank of radius 7 metre and hard 3 metre is made from sheet sheet of metal how many made of metal how many made of metal is required
Answers
Answered by
5
We know that,
Area of closed cylinder= Curved surface area of cylinder + 2 (area of circle)
= 2πrh +
= 2πr(r+h)
Area of closed cylinder = 2πrh(r+h)
Here,
π= 22/7
Radius = 7m
Height = 3m
Substituting the values in the formula, we get,
= 2×22/7×7(7+3)
= 2×22(10)
= 44×10
=
Answered by
0
Step-by-step explanation:
We know that,
Area of closed cylinder= Curved surface area of cylinder + 2 (area of circle)
= 2πrh + 2( {\pi \: r \: })^{2}2(πr)
= 2πr(r+h)
Area of closed cylinder = 2πrh(r+h)
Here,
π= 22/7
Radius = 7m
Height = 3m
Substituting the values in the formula, we get,
= 2×22/7×7(7+3)
= 2×22(10)
= 44×10
=
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