" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
3x+12y=114
simplificamos la 1ª
2x+3y=33
2x+12y=114
multiplicamos la 2ª por (-1)
2x+3y=33
-2x-12y=-114
sumamos las dos
-9y=-81 y=81/9=9 y=9
2x+3*9=33
2x=33-27
2x=6
x=6/2=3 x=3
-----------------
area de la corona= phi*( R^2-r^2)= 3.1416*( 20^2-10^2)=3.1416*(300)=942.48 cm2