tolong jawabannya nomor 2 pakai diketahui dijawab ya dan pakai cara

P = jarak dua pusat = 8cm
R = 5 cm
r = 1 cm
l = panjang garis singgung luar
l² = p² - (R-r)²
l² = 8² - 4²
l² = 64- 16 = 48
l = 4√3

panjang busur AD= 240/360 x 2 πR
AD =2/3 x 2 x 5π
AD = 20/3 π

panjang busur BC = 120/360 x 2 π r
BC = 1/3 (2)(1)(π)
BC = 2/3 π

Panjang lilitan = 2l + AD+ BC = 2(4√3) + (20/3)π + (2/3) π
P = 8√3 + 22/3 π
P = 1/3 (24√3 + 22 π)