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as level p1 👍👍 volume tough question?
1 Answer
- ?Lv 71 year ago
V = 2000 .. x = side of equilateral triangle
Area of eq triangle = (1/2) (x)(sqrt3)(x/2)
Area of tri. = (x^2)(sqrt 3)/4
V = [(x^2)(sqrt 3)/4]h = 2000
h = 2000 / [(x^2)(sqrt 3)/4] = 8000/[(x^2)(sqrt 3)] << 1st answer
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total surface area, A = 2[area of tri] + 3[area of a vertical side]
.. Area of side = xh = 8000/[(x)(sqrt 3)]
A = 2(x^2)(sqrt 3)/4 + 3*8000/[(x)(sqrt 3)]
A = (x^2)(sqrt 3)/2 + [24000/sqrt3] x^-1 >>> 2nd answer
