Tolong di jawab yaa, yg no 8

luas tembereng = {(besar sudut AOB/360°) × πr²} - ½r² sin AOB
luas tembereng = {(72°/360°) × 22/7 × 5²} - (½ × 5² × sin 72°)
luas tembereng = (1/5 × 22/7 × 25) - (½ × 25 × 0,95)
luas tembereng = (550/35) - (23,75/2)
luas tembereng = 15,71 - 11,88
luas tembereng = 3,83 cm²