satu lagi deh hehehehheheheheheh

sisi pendek : sisi panjang = 3:8
pendek = 3/11x66 = 18, 18/2 = 9
panjang = 8/11x66 = 48, 48/2 = 24
rumus keliling
2x(a) + 2x(b)
2x9 + 2x24
18 + 48 = 66 (berarti cocok)
jawabannya (A)