a rectangular piece of paper28 cm × 8cm is folded without overlapping to make a cylinder of heigh8 cm , find volume of the cylinder solution maths
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9th
Maths
Surface Areas and Volumes
Volume of Cube, Cuboid and Cylinder
A Rectangular piece of pape...
MATHS
A Rectangular piece of paper 11 cm × 4 cm is folded without overlapping to make a cylinder of height 4 cm. Find the volume of the cylinder.
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ANSWER
Given a Rectangular piece of paper 11cm×4cm is folded without overlapping to make a cylinder of height 4 cm
The length of the paper becomes the circumference of the base of the cylinder and width becomes height.
Let radius of the cylinder=r and height=h
Circumference of the base of cylinder =2πr=11cm
⇒2×
7
22
×r=11
∴r=
4
7
cm
Now h=4cm
Volume of the cylinder (V)=πr
2
h
=
7
22
×
4
7
×
4
7
×4cm
3
=38.5cm
3
Answer:
ANSWER:-
Given a Rectangular piece of paper 11cm×4cm is folded without overlapping to make a cylinder of height 4 cm
The length of the paper becomes the circumference of the base of the cylinder and width becomes height.
Let radius of the cylinder=r and height=h
Circumference of the base of cylinder =2πr=11cm
⇒2×
7
22
×r=11
∴r=
4
7
cm
Now h=4cm
Volume of the cylinder (V)=πr
2
h
=
7
22
×
4
7
×
4
7
×4cm
3
=38.5cm