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40 = 4s
s = 10
lp limas = Lalas + jumlah luas segitiga
tinggi segitiga = 12" + 5 " >> 144 + 25 = 169 = 13
luas segitiga = 4 x a x t :2
luas segitiga = 4.10.13 : 2
luas segitiga = 260 cm2
luas limas = Lalas + jumlah luas segitiga
luas limas = 100 + 260 === 360 cm2
40 = 4 x s
40/4 =s
10 = s
luas persegi = s x s = 10 x 10 = 100
tinggi selimut limas ( tinggi segitiga )
t = +
t = 144 + 25 = 169 = 13
luas selimut limas
= 1/2 x a x t
= 1/2 x 10 x 13
= 65
L permukaan limas =
L alas + 4xL selimut
100 + 4 x 65
100 + 260 = 360
maaf kalo salah