jawaban dan rumus nya

Mapel : Matematika
Materi : Garis singgung Lingkaran
Kelas : 8

Nomor 10]

P = √[D² + (R + r) ²]
P = √[72² + (20 + 10)²]
P = √[5184 + 900]
P = √[6084]
P = 78 cm

Nomor 11]

R = √[P² - L²] + r
R = √[26² - 24²] + 3
R = √[676 - 576] + 3
R = √[100] - 3
R = 10 + 3
R = 13 cm