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# If a rectangular block that is 4 inches by 4 inches by 10 inches is p

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Math Expert
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If a rectangular block that is 4 inches by 4 inches by 10 inches is p  [#permalink]

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30 Nov 2017, 22:57
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Difficulty:

15% (low)

Question Stats:

80% (01:23) correct 20% (01:42) wrong based on 57 sessions

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If a rectangular block that is 4 inches by 4 inches by 10 inches is placed inside a right circular cylinder of radius 3 inches and height 10 inches, the volume of the unoccupied portion of the cylinder is how many cubic inches?

(A) 6π – 16
(B) 9π – 16
(C) 160 – 30π
(D) 60π – 160
(E) 90π – 160

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If a rectangular block that is 4 inches by 4 inches by 10 inches is p  [#permalink]

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30 Nov 2017, 23:28
E

Volume of cylinder =pi.3^2*10
=90.pi

Volume of rectangular block = 4*4*10=160

Hence unoccupied volume =90.pi-160

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If a rectangular block that is 4 inches by 4 inches by 10 inches is p  [#permalink]

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01 Dec 2017, 10:01
Bunuel wrote:
If a rectangular block that is 4 inches by 4 inches by 10 inches is placed inside a right circular cylinder of radius 3 inches and height 10 inches, the volume of the unoccupied portion of the cylinder is how many cubic inches?

(A) 6π – 16
(B) 9π – 16
(C) 160 – 30π
(D) 60π – 160
(E) 90π – 160

Volume of rectangular block =
(L * W * H) = (4 * 4 * 10) = 160 cubic inches

Volume of right circular cylinder, where r = 3 and h = 10:
$$\pi r^2h = \pi(3^2)(10) = 90\pi$$ cubic inches

Unoccupied space, in cubic inches, is
(cylinder volume) - (rectangular block volume):

$$90\pi - 160$$

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If a rectangular block that is 4 inches by 4 inches by 10 inches is pl  [#permalink]

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18 May 2018, 15:01
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If a rectangular block that is 4 inches by 4 inches by 10 inches is placed inside a right circular cylinder of radius 3 inches and height 10 inches, the volume of the unoccupied portion of the cylinder is how many cubic inches?

(A) $$6\pi - 16$$

(B) $$9\pi - 16$$

(C) $$160 - 30\pi$$

(D) $$60\pi - 160$$

(E) $$90\pi - 160$$
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Re: If a rectangular block that is 4 inches by 4 inches by 10 inches is pl  [#permalink]

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18 May 2018, 18:19
Volume Cylinder = pi * r^2 * h = pi * 3^2 * 10 = 90pi

Volume Block = 10 * 4 * 4 = 160

Volume space in cynlinder = 90pi - 160

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Re: If a rectangular block that is 4 inches by 4 inches by 10 inches is p  [#permalink]

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18 May 2018, 23:23
carcass wrote:
If a rectangular block that is 4 inches by 4 inches by 10 inches is placed inside a right circular cylinder of radius 3 inches and height 10 inches, the volume of the unoccupied portion of the cylinder is how many cubic inches?

(A) $$6\pi - 16$$

(B) $$9\pi - 16$$

(C) $$160 - 30\pi$$

(D) $$60\pi - 160$$

(E) $$90\pi - 160$$

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Re: If a rectangular block that is 4 inches by 4 inches by 10 inches is p &nbs [#permalink] 18 May 2018, 23:23
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