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Diameter of cylinder A is 7 cm, and the height is 14 cm. Diameter of

cylinder B is 14 cm and height is 7 cm. Without doing any calculations
can you suggest whose volume is greater? Verify it by finding the
volume of both the cylinders. Check whether the cylinder with greater
volume also has greater surface area

User Tsionyx
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1 Answer

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Cylinder A has a diameter of 7 cm and a height of 14 cm, while cylinder B has a diameter of 14 cm and a height of 7 cm. To find the volume of each cylinder, you can use the formula:

volume = πr^2h

where "r" is the radius of the base of the cylinder, "h" is the height of the cylinder, and "π" is a constant approximately equal to 3.14.

If we plug in the values for the radius and height of each cylinder, we get:

For cylinder A: volume = π * (7/2)^2 * 14 = approximately 153.94 cm^3

For cylinder B: volume = π * (14/2)^2 * 7 = approximately 301.88 cm^3

This shows that cylinder B has a greater volume than cylinder A.

To find the surface area of each cylinder, you can use the formula:

surface area = 2πr^2 + 2πrh

where "r" is the radius of the base of the cylinder, "h" is the height of the cylinder, and "π" is a constant approximately equal to 3.14.

If we plug in the values for the radius and height of each cylinder, we get:

For cylinder A: surface area = 2π * (7/2)^2 + 2π * (7/2) * 14 = approximately 299.44 cm^2

For cylinder B: surface area = 2π * (14/2)^2 + 2π * (14/2) * 7 = approximately 476.16 cm^2

This shows that cylinder B also has a greater surface area than cylinder A.

User Helen K
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