mohon bantuannya ya makasih :)

10. panjang persegi / alas dibagi 2 = 16 /2 = 8
t prisma = 17^2 - 8^2 = √225 = 15
v = luas alas × tinggi
v = 16 × 15 = 240 cm
11. v = luas alas × tinggi
luas alas = v / t
= 450/15 = 30 cm
12. luas alas = v/t
= 27000/90 = 300
luas persegi = s×s = 300
= √ 3 × 100
= √ 3 × 10 × 10
= 10 √ 3