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10×10=100 m²
1/2×3×3=4,5 m²
30+100+4,5=134,5 m²
7.1/2×22/7×7×7=77 m²
1/2×14×4=28 m²
77+28=105 m²
semoga membantu dan maaf kalau salah
L 1= 1/2×a×t
= 1/2×10cm×10cm
= 50 m
L 2= /1 2×a×t
= 1/2×10×10m
= 50m
3.luas persegi panjang
= P×L
= 10×3m = 30m
4.= 1/2×3cm×3cm= 1/2×9cm = 4,5
luas 1,2,3,4 ditambah 50cm+50cm+30cm+4,5cm = 134,45m
nomor 7
1. L = 1/2×22/7×7×7= 11×7=77
2.L = 1/2×a×t=1/2×14×14=28
L1+L2 segitiga=77dm+28=105dm
jadikan aku sebagai jawaban terbaik ya....