" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
1386 = 22/7 x r²
1386 x 7/22 = r²
441 = r²
r = 21 cm
r= x+7
La = 1386
La = 2 . pi . r^2
1386 = 2 . 3,14 . [(x+7)^2]
1386 = 6,28 . [ x^2 + 14x + 49 ]
220,7 = x^2 + 14x + 49
0 = -171,7 + x^2 + 14x
x = ..
pakai cara krammer? apa sudah diajarkan?