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Let's do this question the outer and inner diameters of a spiritual shell are 20 centimeter and 10 centimeter

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respectively, find the volume of the metal contained in the shell was the video.

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Give it a try and then let's do it together.

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All right.

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We are back.

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Let's do it together.

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Over here.

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You have a spiritual shell, right?

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And it's given that the two diameters are 20 centimeter and 10 centimeter.

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Now, we know that the volume of the metal that's this part over here is given by four, by three by

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our cube, minus four by three by our cube, because this part over here is hollow and that is equal

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to or by three by ten cubed minus five cube.

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Right.

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Because over here the diameter is 20 to the radius will be 10.

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Over here the diameter is 10.

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So the radius will be fine.

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So that's how you get ten and five over here.

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And this simplifies two or three pi into eight hundred and seventy five.

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Let's try to simplify that.

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OK, so that's four by three into 22 by seven into eight, seven five, that's equal to four by three

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into twenty two into one twenty five, OK, and that's equal to one one zero zero zero centimetre two

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by three.

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So this is what you get over here on simplifying this part.

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That is your answer.