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joelmwa
 2 years ago
show that the area of a circle x^2+y^2=a^2 is pi a^2
joelmwa
 2 years ago
show that the area of a circle x^2+y^2=a^2 is pi a^2

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shubhamsrg
 2 years ago
Best ResponseYou've already chosen the best response.0what is the radius of the circle : x^2 + y^2 = a^2 ??

jayz657
 2 years ago
Best ResponseYou've already chosen the best response.2solve for y and get y = sqrt(a^2x^2) < equation for a semi circle integrate this from a to a dw:1352793815172:dw once you integrate it you will get \[\Pi a^2 / 2 \] since you found the area of a semicircle multiply it by 2 to get the area of the circle which is \[\Pi a^2\]

joelmwa
 2 years ago
Best ResponseYou've already chosen the best response.0thanks jayz657 @shubhamsrg the r is not given its just proving if the area of circle given equals pi a^2
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