Axial section

Axial section of the cone is an equilateral triangle with area 208 dm2. Calculate the volume of the cone.

Result

V =  188.1 dm3

Solution:

S=πa2(a2+a)=34πa2=208 dm2 a=4S3π=9.4 dm h=a2a22=8.14 dm  V=13πr2h=188.1 dm3S = \pi \cdot \dfrac{a}{2}(\dfrac{a}{2}+a) = \dfrac{3}{4}\pi a^2 = 208 \ dm^2 \ \\ a = \sqrt{ \dfrac{4S}{3\pi}} = 9.4 \ dm \ \\ h = \sqrt {a^2-\dfrac{a^2}{2}} = 8.14 \ dm \ \\ \ \\ V = \dfrac{1}{3} \pi r^2 h = 188.1 \ dm^3







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Tip: Our volume units converter will help you with the conversion of volume units. Pythagorean theorem is the base for the right triangle calculator. See also our trigonometric triangle calculator.

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