digital4danceki
digital4danceki digital4danceki
  • 07-12-2017
  • Mathematics
contestada

A cylinder has a diameter of 6 ft and height of 9 ft. What is the volume of this cylinder? A) 54 ft2 B) 169.8 ft3 C) 254.3 ft3 D) 1,017 ft3

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belindalawrencovtj5n
belindalawrencovtj5n belindalawrencovtj5n
  • 13-12-2017
C) 254.3

1. 3.14 * 3^2  
2. 28.26 * 9
3. 254.3
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Kalahira
Kalahira Kalahira
  • 17-12-2017
In order to find the volume of a cylinder, we must find the area of its circular face and multiply that value by its height. The area of a circle is (pi)*r^2. The diameter is twice the radius, so the cylinder has a radius of 6/2, or 3 ft. The area of the circular face of the cylinder is therefore 9(pi) or approximately 28.27 sq. ft. Multiplying that area by the height of 9 ft. results in a volume of approximately 254.3 cubic ft., which is answer C.
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