Perhatikan gambar diatas. Luas daerah yg diarsir adalah...

VIII Luas

diameter = sisi miring ∆
d =√16²+12²
d =√256+ 144
d =√400
d = 20 cm => r = 10 cm

L yg diarsir
= L O - L∆
= πr² - ½. a.t
= 3,14. 10. 10 - ½. 12. 16
= 314 - 6. 16
= 314 - 96
= 218 cm²

semoga membantu : D