mohon dijawab dengan caranya pliss

[tex]l \: persegi = p \times l \\ = 15 \times 7 \\ = 105cm {}^{2} \\ l \: \frac{1}{2} lingkaran = \frac{1}{2} \pi \times r \times r \\ = \frac{1}{2} \times \frac{22}{7} \times 3.5 \times 3.5 \\ = 19.25cm {}^{2} \\ \\ l \: = 105 - 19.25 = 85.75cm {}^{2} [/tex]




jadi jawabannya D