tolong di jawab secepatnya ya!!!, soal nya besok di kumpul

1.8+8+7+7 = 30
2.50 × 4 = 200
3.
4.
5.
6. 225
7. 6²+ 18 = 36 + 18 = 54
8. 16
9. 12 + 10 = 22
10. 12 × 4 = 48
11. 84 × 2 = 168, 168 ÷ 7 = 24
12. persegi = 15 × 4 = 60
segitiga = 15×6÷2 = 45 + 60 = 105cm²

14) Terdiri dr 8 persegi dngn luas 1 persegi = s²
8s² = 128
s² = 128÷8
s² = 16
s = √16 = 4 cm

K persegi = 4s = 4(4) = 16 cm

15) Luas segitiga = 1/2 × a × t
1/2 × a × 17 = 357
1/2 × a = 357÷17
1/2 × a = 21
a = 21÷1/2
alas segitiga = 42 cm

1) keliling = 2p + 2l = 2(8) + 2(7) = 16+14 = 30 cm
2) keliling = 4s = 4(50) = 200 cm


udah itu dulu ya