Find the volume, curved surface area and total surface area of each of cylinders whose dimensions are
1) radius of the base = 5.6m and hight = 1.25m
2) radius of the base = 14 dm and hight = 15 m
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Answered by
40
hi,
here's ur answer...
1. given radius is 5.6m and height is 1.25m
→volume of the cylinder=πr²h
=22/7×5.6×5.6×1.25
=862.4/7
=123.2cm³
→CSA of the cylinder=2πrh
=2×22/7×5.6×1.25
=308/7
=44cm²
→ TSA of the cylinder=2πr(h+r)
=2×22/7×5.6(1.25+5.6)
=246.4/7×6.85
=1687.84/7
=241.12cm²
2. given radius is 14dm and height is 15m.
radius in metre=14/10
=1.4m
→volume of cylinder=πr²h
=22/7×1.4×1.4×15
=646.8m³
→ CSA of the cylinder=2πrh
=2×22/7×1.4×15
=924/7
=132m³
→ TSA of the cylinder=2πr(h+r)
=2×22/7×1.4(15+1.4)
=61.6/7×16.4
=1010.24/7
=144.32m²
hope this helps u..!
here's ur answer...
1. given radius is 5.6m and height is 1.25m
→volume of the cylinder=πr²h
=22/7×5.6×5.6×1.25
=862.4/7
=123.2cm³
→CSA of the cylinder=2πrh
=2×22/7×5.6×1.25
=308/7
=44cm²
→ TSA of the cylinder=2πr(h+r)
=2×22/7×5.6(1.25+5.6)
=246.4/7×6.85
=1687.84/7
=241.12cm²
2. given radius is 14dm and height is 15m.
radius in metre=14/10
=1.4m
→volume of cylinder=πr²h
=22/7×1.4×1.4×15
=646.8m³
→ CSA of the cylinder=2πrh
=2×22/7×1.4×15
=924/7
=132m³
→ TSA of the cylinder=2πr(h+r)
=2×22/7×1.4(15+1.4)
=61.6/7×16.4
=1010.24/7
=144.32m²
hope this helps u..!
Answered by
19
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