tolong jawab ya kak
Jawaban:
1. Answer: The perimeter of a circle is \pi × d. Here 'd' is the diameter of the circle. Hence, the perimeter of a circle is half of the that of the circle that is ½ \pi × d.
2. AOB = 90°
∠AOC = 150°
Ditanya :
Panjang busur BC =
Jawab :
Step 1
∠ BOC = ∠AOC - ∠AOB
= 150° - 90°
= 60°
Step 2 last
⇔
kali silang
90 × c = 60 × 36
90c = 2160
c =
c = 24 cm
Jadi, panjang busur BC adalah 24 cm
3. L=1/2×alas×tinggi
L=1/2×30×12
L=15×12
L=180cm²
[answer.2.content]
