find the area of r=4 sin (theta)?

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find the area of r=4 sin (theta)?

2007-02-01 20:33:18 · 3 answers · asked by aizel m 1 in Science & Mathematics ➔ Mathematics

3 answers

I'm afraid that's not a proper question. r=4 sin (theta) is not a shape that has an area.

Addition:

If the question was "find the area of the circular represented by the polar equation r=4 sin(theta)" then it would make sense.

Here's how to solve it. Figure out the radius of the circle, then calculate area = Pi x radius squared.

2007-02-01 20:43:23 · answer #1 · answered by Gnomon 6 · 0⤊ 0⤋

This is the equation of a circle with radius 4/2 = 2.

The area of the circle is ÏrÂ² = Ï2Â² = 4Ï.

2007-02-02 05:17:56 · answer #2 · answered by Northstar 7 · 0⤊ 0⤋

u have to integrate 4sin(theta) from -pi to pi..........ans is 8

2007-02-02 05:23:40 · answer #3 · answered by Pradeep Chelani 2 · 0⤊ 0⤋