If the area bounded by the curve x 2 / 3 + y 2 / 3 = 2 0 1 6 2 / 3 is the form of a × π , find a .
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The given equation represents an asteroid. Standard equation is given by x 3 2 + y 3 2 = a 3 2
Its area is given by 8 3 a 2 π .
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We can parametrise the curve C as x = 2 0 1 6 cos 3 ( t ) , y = 2 0 1 6 sin 3 ( t ) . Thus the enclosed area is ∫ C x d y = 3 ∗ 2 0 1 6 2 ∫ 0 2 π cos 4 ( t ) sin 2 ( t ) d t = 3 ∗ 2 0 1 6 2 ∗ 8 π . The answer is 8 3 ∗ 2 0 1 6 2 = 1 5 2 4 0 9 6