mencari luas daerah berbayang tolong pakai cara

1. 10×3=30
2×1/2×10×10=100
1/2×3×3=4,5
100+30+4,5=134,5

2. 7×7=49
(30-7)×7
23×7=161
48+161=210

3. 8×8=64
(8+3+3)+8×4×1/2=60
64+60=124

4.L=15×8=120
L=6×6=36
120+36=156

5.L=2×1/2×10+5×5
=2×1/2×15×5
=2×1/2×75
=1/2×150
75