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Find the area between the loops of the limacon r=4(1+2cos(theta)).

User Masayuki
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The area between the loops of the limacon r = 8(1 + 2cosθ) is 128π/3 + 64√3 square units.

The polar curve r = 8(1 + 2cosθ) has two loops, one large and one small. The small loop is centered at (4,0) and the large loop is centered at (-4,0).

The equation of the curve :

r = 8 + 16cosθ

r = 8 + 16cosθ

0 = 8 + 16cosθ

cosθ = -1/2

θ = 2π/3 or 4π/3

We then set up the integral to find the area between the loops:

A = 1/2 ∫θ=2π/3 to 4π/3 [r(θ)]² dθ

A = 1/2 ∫θ=2π/3 to 4π/3 [8 + 16cosθ]² dθ

We simplify this integral by expanding the square and using trigonometric identities.

A = 128π/3 + 64√3

In conclusion, we can say that the area between the loops of the limacon r = 8(1 + 2cosθ) is 128π/3 + 64√3 square units.

complete question:

Find the area between the loops of the limacon r=8(1+2cosθ) r = 8 ( 1 + 2 cos ⁡ θ ) .

User Rea
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