kerjakan no.4 dan 5 tollong yaa jwbnnya dan caranya

jawab
Lingkaran
(4)
AB² = CD² + (AD - BC)²
26²  = 24² + (20 - BC)²
(20 - BC)²  = 26² - 24² = 100
20 - BC = √100 = 10
BC = 20 - 10
BC = 10 cm

(5)
r1= 5
r2= x
p = 24
j = 25
(r1+ x)²= j² - p²
(5 + x)²= 25²- 24² = 49
5 + x = 7
x = 2
r2 = 2 cm