Tolong dibantu,buat belajar uts

jawaban B
[tex]sisi \: miring \: segitiga = \sqrt{ {16}^{2} + {12}^{2} } \\ = \sqrt{256 + 144} \\ = \sqrt{400} \\ = 20 \: cm \\ \\ luas \: daerah \: yg \: diarsir \\ = luas \: lingkaran - luas \: segitiga \\ = (3.14 \times 10 \times 10) - ( \frac{16 \times 12}{2} ) \\ = 314 - 96 \\ = 218 {cm}^{2} [/tex]