" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
45/360 x phi x r² = 77
1/8 x 22/7 x r² = 77
1/4 x 11/7 x r² = 77
11/28 x r² = 77
r² = 77 x 28/11
r² = 7 x 28
r =√196
r = 14
luas lingkaran
L = phi x r²
= 22/7 x 14 x 14
= 22 x 2 x 14
= 616
jawabnnya D
x=616
jadi luas juring 616 cm^2 (pilihan d)