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K = 70 m
Dit : L = ...?
Jwb:
K = 70 m
2. (p + l) = 70 m
p + l =
l + 5 m + l = 35 m
2 l = 35 m - 5m
l =
l = 15 m
p = l + 5 m
= 15 m + 5 m
= 20 m
L = pl
= 20 m. 15 m
= 300 m²
Jadi, luas kebun itu adalah 300 m²