bantuin aku ya kak bsk dikumpulin,pke cara ya kak makasih

Luas ○1
[tex] = \pi \times {r}^{2} \\ = \frac{22}{7} \times {7}^{2} \\ = \frac{22}{7} \times 49 \\ = 22 \times 7 = 154 {cm}^{2} [/tex]

Luas ○2
[tex] = \frac{1}{2} \times \pi \times {r}^{2} \\ = \frac{1}{2} \times \frac{22}{7} \times {3.5}^{2} \\ = \frac{1}{2} \times \frac{22}{7 } \times 12.25 \\ [/tex]
[tex] = \frac{11}{7} \times 12.25 \\ = 19.25 {cm}^{2} [/tex]

Luas Seluruh
=Luas ○1 + Luas ○2 - Luas ○2
[tex] = 154 + 19.25 - 19.25 \\ = 154 {cm}^{2} [/tex]
Maaf kalau salah;)