tolong jawab ya soal ini

1.
luas lingkaran pertama :
[tex]l = \frac{1}{2} \times \frac{22}{7} \times 7 \times 7 = \frac{154}{2} = 77 {cm}^{2} [/tex]
luas lingkaran kedua :
[tex]l = \frac{1}{4} \times \frac{22}{7} \times 14 \times 14 = \frac{4312}{28} = 154 {cm}^{2} [/tex]
luas persegi :
[tex]l = 14 \times 14 = 196 {cm}^{2} [/tex]
luas total = 77 + 154 + 196 = 427 cm^ (c)


2.
[tex]l = \frac{(a + b) \times t}{2} = \frac{190 \times 61}{2} = \frac{11590}{2} = 5795[/tex]
jawaban c