Tolong dong caranya yang lengkap​

Jawaban:

GSPL= 12 cm

J= 13 cm

r= 2 cm

R/AD?

GSPL² = J² – (R–r) ²

12² = 13² – (R–2)²

144 = 169 – (R–2)²

(R–2)² = 169–144

(R–2)² = 25

(R–2) = √25

R–2 = 5

R = … – 2= 5

R = 7 cm

Maaf jika salah

Semoga membantu

#tanjrare170619.