no 2, 5, dan 6 tolong bantu yaa

2.
luas = 9 x 12/2 = 54 cm²
luas = 15 x 8/2 = 60 cm²

5.
√4 = 2,0
√18 = 3√2 = 3 x 1,4 = 4,2
√30 = 5,5
√45 = 3√5 = 3 x 2,2 = 6,6

6.
p = 2 x 5 / 4 = 2,5
p = 6 x 12 /8 = 9
q = 4 x 5/10 = 2
q = 8 x 9/12 = 6

#maaf jika salah semoga membantu