" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
48 = 2 ( 3a) + 2 ( a)
48 = 6a + 2a
48 = 8a
a = 6
jadi ukurannya
panjang = 3a = 3( 6) = 18
lebar = a = 6
luas segitiga....
alas Δ nya = AB = 18
tinggi Δ nya = BC = 6
luas Δ = 1/2 x alas x tinggi
= 1/2 x 18 x 6
= 54