tolong kerjakan 7dan 6 dangan cara

6. L = d1 × d2 ÷ 2
36 = 1x × 2x ÷ 2
36 = 2x² ÷ 2
2x² = 36 × 2
2x² = 72
x² = 72/2
x² = 36
x = √36
x = 6 cm

d1= 1x
d1= 1.6 = 6 cm
d2= 2x
d2= 2.6 = 12 cm

7. gambar 1
5x = 130°
x = 130/5
x = 26°

y + 130 + 130 + 40 = 360
y = 360 - 130 - 130 - 40
y = 60°

gambar 2
x + 40 + 40 = 180
x = 180 - 40 - 40
x = 100°

y + 70 + 70 = 180
y = 180 - 70 - 70
y = 40°

semoga membantu