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# pls help due tonight

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The line y = (3x + 20)/4 intersects a circle centered at the origin at A and B. We know the length of chord \overline{AB} is 20. Find the area of the circle.

A circle centered at $(3,2)$ is tangent to the line $y=(x+1)/3.$ Find the area of the circle.

We are given $O = (0,0),$ $A = (5,2),$ and $B = (6,-3).$ Find $[OAB].$ We are given $A = (2,5),$ $B = (-5,2),$ $C = (-2,-5),$ and $D = (5,-2).$

Find $[ABCD].$

Find the area of the region bounded by the lines $y=5$ and $5x+2y=25$ and the coordinate axes.

May 27, 2021

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1. The area of the circle is 26*pi.

2. The area of the circle is 12*pi.

3. [ABCD] = 28.

4. The area is 14.

May 27, 2021