Question

Tolong dijawab ya!! Bagi yang tahu...!!

Answer 1

D² = p² - (R+r)²
24² = 26² - (6+r)²
576 = 676 - (6+r)²
-100 = - (6+r)²
10² = (6+r)²
10 = 6+r
4 cm = r