Hitunglah lagi luas dan keliling yang diarsir

luas =
[tex]l1 = {s}^{2} \\ \: \: \: \: \: = 10 \times 10 \\ \: \: \: \: \: = 100 \: {cm}^{2} \\ l2 = \frac{1}{4} \times \frac{1}{4} \times \pi \: d \\ \: \: \: \: \: = \frac{1}{4} \times \frac{1}{4} \times 3.14 \times 10 \times 10 \\ \: \: \: \: \: = \frac{1}{16} \times 3.14 = 19.625 \: cm[/tex]
luas daerah diarsir = 100 cm²-19,625 cm² = 80,375cm²