The total surface area of a hollow metal cylinder open at both ends of external radius 8 cm and height 10 cm is 338 - cm 2 - Taking r to be inner radius- write down an equation in r and use it to state the thickness of the metal in the cylinder-A- 1 cmB- 2 cmC- 3 cmD- 4 cmE- 5 cm

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The total surface area of a hollow metal cylinder open at both ends of external radius 8 cm and height 10 cm is 338π cm^2.Taking r to be inner radius, write down an equation in r and use it to state the thickness of the metal in the cylinder.

1 cm

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2 cm

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3 cm

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4 cm

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5 cm

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Solution

The correct options are
B
2 cm

C
3 cm

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The total surface area of a hollow metal cylinder open at both ends of external radius 8 cm and height 10 cm is 338π cm2. Taking r to be inner radius, write down an equation in r and use it to state the thickness of the metal in the cylinder.

The correct options are B 2 cm C 3 cm

The total surface area of a hollow metal cylinder open at both ends of external radius 8 cm and height 10 cm is 338π cm^2.Taking r to be inner radius, write down an equation in r and use it to state the thickness of the metal in the cylinder.

The correct options are
B
2 cm

C
3 cm