Bantu jwb plis dikumpulkan 10 ​

1. 12 cm

2. 16 cm

3. 10 cm

4. 3 cm

5. 4 cm

Penjelasan dengan langkah-langkah:

1. d² = 13² – (8 – 3)²

= 169 – 25

= 144

d = √144 = 12 cm

2. d² = 20² – (5+7)²

= 400 – 144

= 256

d = √256 = 16 cm

3. OP² = 6² + (5+3)²

=36 + 64

= 100

OP = √100 = 10 cm

4. (R – r)² = 13² – 12²

(8 – r)² = 169 – 144

= 25

8 – r = √25

= 5

r = 8 – 5 = 3 cm

5. (R+r)² = 15² – 12²

(5+r)² = 225 – 144

= 81

5 + r = √81

= 9

r = 9 – 5 = 4 cm