The circumference of the base of a solid right circular cylinder is 132 cm and…

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The circumference of the base of a solid right circular cylinder is 132 cm and its height is 60 cm. What is the volume (in cm3) of the cylinder?

Take π = 22/7.

Answer: A. 83160CONCEPTFor a right circular cylinder, the base circumference and volume are C = 2πr and V = πr2h. First find the radius from the circumference, then use that…

  1. A.

    83160

  2. B.

    82654

  3. C.

    82995

  4. D.

    82681

Attempted by 10 students.

Show answer & explanation

Correct answer: A

CONCEPT

For a right circular cylinder, the base circumference and volume are C = 2πr and V = πr2h.

First find the radius from the circumference, then use that radius with the height in the volume formula. All dimensions must use the same unit.

APPLICATION

  1. Let r be the radius in centimetres. From C = 2πr, write 132 = 2 × (22/7) × r.

  2. Solve for the radius: r = (132 × 7)/44 = 21 cm.

  3. Use the cylinder-volume formula: V = πr2h.

  4. Substitute the known values: V = (22/7) × 212 × 60.

  5. Simplify in order: V = 22 × 63 × 60 = 1,386 × 60 = 83,160 cm3.

CROSS-CHECK

  1. The recovered radius gives circumference 2 × (22/7) × 21 = 132 cm, matching the given value.

  2. The base area is (22/7) × 212 = 1,386 cm2; multiplying by height 60 cm gives 83,160 cm3.

Therefore, the cylinder volume is 83,160 cm3.

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