bagian yang ditanami rumput = 1 – (1/4 + 2/5)
= 20/20 – (5/20 + 8/20) = 20/20 – 13/20 = 7/20
7/20 x 140
=49 m²
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bagian yang ditanami rumput = 1 – (1/4 + 2/5)
= 20/20 – (5/20 + 8/20) = 20/20 – 13/20 = 7/20
7/20 x 140
=49 m²
140 m2 x ( 20/20 - (5/20+8/20)
140 m2 x (20/20-13/20)
140 m2 x 7/20
49 m2