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The height of a pyramid on square base is 15cm. If the volume is 80cm(^3),…

The height of a pyramid on square base is 15cm. If the volume is 80cm(^3), find the length of the side of the base

  • A.
    3.3cm
  • B.
    5.3cm
  • C.
    4.0cm
  • D.
    8.0cm
Correct Answer: Option C
Explanation

Volume = (frac{1}{3} b^2 h)

(therefore b = sqrt{frac{3v}{h}})

(b = sqrt{frac{3(80)}{15}} )

(b = sqrt{16} = 4.0 cm)