Calculate the length of the base side of a regular triangular pyramid with volume 2 and height 2√3.
August 22, 2021 | education
| We apply the formula for the volume of the pyramid and express the area of the base through it.
Vpyr = Sosn * SO / 3.
Sbas = 3 * Vpyr / SO = 3 * 2 * / 2 * √3 = 3 / √3 = √3 cm2.
The ABC triangle is equilateral, then all its angles are equal to 600.
Then the area of the triangle ABC will be equal to:
Saavs = AB * BC * Sin60 / 2 = BC2 * √3 / 4.
BC2 = 4 * Savs / √3 = 4 * √3 / √3 = 4.
BC = AB = AC = 4 cm.
Answer: The length of the side of the base is 2 cm.
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