r = d/2
= 140/2 = 70 cm = 0.7 m
Volume of cylinder = πr²h
154 = 3.14 × 0.7²× h
h = 154/3.14× 0.49
h = 100m
Answer:
First, we have to find the radius of a cylinder :
Given :
According to the question by using the formula we get,
[tex]\implies \sf\boxed{\bold{Radius =\: \dfrac{Radius}{2}}}\\[/tex]
[tex]\implies \sf Radius =\: \dfrac{140}{2}\\[/tex]
[tex]\implies \bf Radius =\: 70\: cm\\[/tex]
Let's convert the radius of a cylinder cm into m :
[tex]\implies \sf Radius =\: 70\: cm\\[/tex]
[tex]\implies \sf Radius =\: \dfrac{70}{100}\: m\\[/tex]
[tex]\implies \sf\bold{Radius =\: 0.7\: m}\\[/tex]
Now, we have to find the height of the cylinder :
[tex]\implies \sf\boxed{\bold{Volume_{(Cylinder)} =\: {\pi}r^2h}}\\[/tex]
[tex]\implies \sf 1.54 =\: \dfrac{22}{7} \times (0.7)^2 \times h\\[/tex]
[tex]\implies \sf 1.54 =\: \dfrac{22}{7} \times (0.7 \times 0.7) \times h\\[/tex]
[tex]\implies \sf 1.54 =\: \dfrac{22}{7} \times 0.49 \times h\\[/tex]
[tex]\implies \sf 1.54 =\: \dfrac{22 \times 0.49}{7} \times h\\[/tex]
[tex]\implies \sf 1.54 =\: \dfrac{10.78}{7} \times h\\[/tex]
[tex]\implies \sf 1.54 \times \dfrac{7}{10.78} =\: h\\[/tex]
[tex]\implies \sf \dfrac{1.54 \times 7}{10.78} =\: h\\[/tex]
[tex]\implies \sf \dfrac{\cancel{10.78}}{\cancel{10.78}} =\: h[/tex]
[tex]\implies \sf \dfrac{1}{1} =\: h\\[/tex]
[tex]\implies \sf 1 =\: h[/tex]
[tex]\implies \sf\bold{h =\: 1\: m}\\[/tex]
[tex]\sf\bold{\underline{\therefore\: The\: height\: of\: the\: cylinder\: is\: 1\: m\: .}}\\[/tex]
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Answers & Comments
r = d/2
= 140/2 = 70 cm = 0.7 m
Volume of cylinder = πr²h
154 = 3.14 × 0.7²× h
h = 154/3.14× 0.49
h = 100m
Verified answer
Answer:
Given :-
To Find :-
Solution :-
First, we have to find the radius of a cylinder :
Given :
According to the question by using the formula we get,
[tex]\implies \sf\boxed{\bold{Radius =\: \dfrac{Radius}{2}}}\\[/tex]
[tex]\implies \sf Radius =\: \dfrac{140}{2}\\[/tex]
[tex]\implies \bf Radius =\: 70\: cm\\[/tex]
Let's convert the radius of a cylinder cm into m :
[tex]\implies \sf Radius =\: 70\: cm\\[/tex]
[tex]\implies \sf Radius =\: \dfrac{70}{100}\: m\\[/tex]
[tex]\implies \sf\bold{Radius =\: 0.7\: m}\\[/tex]
Now, we have to find the height of the cylinder :
Given :
According to the question by using the formula we get,
[tex]\implies \sf\boxed{\bold{Volume_{(Cylinder)} =\: {\pi}r^2h}}\\[/tex]
[tex]\implies \sf 1.54 =\: \dfrac{22}{7} \times (0.7)^2 \times h\\[/tex]
[tex]\implies \sf 1.54 =\: \dfrac{22}{7} \times (0.7 \times 0.7) \times h\\[/tex]
[tex]\implies \sf 1.54 =\: \dfrac{22}{7} \times 0.49 \times h\\[/tex]
[tex]\implies \sf 1.54 =\: \dfrac{22 \times 0.49}{7} \times h\\[/tex]
[tex]\implies \sf 1.54 =\: \dfrac{10.78}{7} \times h\\[/tex]
[tex]\implies \sf 1.54 \times \dfrac{7}{10.78} =\: h\\[/tex]
[tex]\implies \sf \dfrac{1.54 \times 7}{10.78} =\: h\\[/tex]
[tex]\implies \sf \dfrac{\cancel{10.78}}{\cancel{10.78}} =\: h[/tex]
[tex]\implies \sf \dfrac{1}{1} =\: h\\[/tex]
[tex]\implies \sf 1 =\: h[/tex]
[tex]\implies \sf\bold{h =\: 1\: m}\\[/tex]
[tex]\sf\bold{\underline{\therefore\: The\: height\: of\: the\: cylinder\: is\: 1\: m\: .}}\\[/tex]