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anonymous
 one year ago
Points A(−1, 2), B(−2, −5) and C(7, −2) are on a circle. What is the area of the circle?
Express your answer as a decimal to the nearest tenth.
anonymous
 one year ago
Points A(−1, 2), B(−2, −5) and C(7, −2) are on a circle. What is the area of the circle? Express your answer as a decimal to the nearest tenth.

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.01. slope of AB 2. mid point of A,B 3. slope of line perpendicular to AB 4. eq. of line (perpendicular bisector) through mid point 5. similarly find the eq. of perpendicular bisector of BC 6. center is point of intersection of perpendicular bisectors (say O) 7.find r=OA 8. area of circle.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[slope=\frac{ y _{2}y _{1} }{ x _{2} x _{1}}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0mid point\[=\left( \frac{ x _{1} +x _{2}}{ 2 } ,\frac{ y _{1} +y _{2}}{ 2 }\right)\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0can you help me i dont know what you are talking about can you give me the answer too @surjithayer

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0first find the slope of AB by the above formula and show me.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[m=\frac{ 52 }{ 2(1) }=\frac{ 7 }{ 2+1 }=\frac{ 7 }{ 1 }=7\] slope of line perpendicular to AB=1/m=1/7
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