Question

Tolong di jawab cepetan no 20

Answer 1

GSPD = 20 cm
s (jarak antar 2 titik) = 25 cm
R = 10 cm

1. Gunakan tripel pitagoras
 03      04      05
  ↓ × 5  ↓ × 5  ↓ × 5
 15      20       25

Maka R+r = 15 cm

2. Masukkan nilai R

15 = R + r
15 = 10 + r
15 - 10 = r
5 cm = r.....(A)