tolong dijawab ya point lumayan

41. b
[tex]7 \times 7 \times \frac{22}{7} = 154 \: cm2[/tex]
[tex]154 \times \frac{3}{5} = 92.4 \: cm2[/tex]
42. d
[tex]luas \: aedf = 8 \times 6 = 48cm2 \\ luas \: bcdf = (6 + 10) \div 2 \times (15 - 8) = 56cm2 \\ total = 48 + 56 = 104cm2[/tex]

[tex]41.luas \: lingkaran \: \pi {r}^{2} \\ \frac{22}{7} \times {7}^{2} \\ 22 \times 7 \\ 154 {cm}^{2} \\ luas \: arsiran = \frac{3}{5} \times 154 \\ 30.8 \times 3 \\ = 92.4 {cm}^{2} \\ 42.l.p.panjang + l.trapesium \\ (6 \times 8) + ( \frac{(10 + 6) \times 7}{2} ) \\ 48 + \frac{112}{2} \\ 48 + 56 \\ = 104 {cm}^{2} [/tex]