tolong jawab 8 sampai 10 ya

8. L= p×ly
80×75
6000 m :50
120×2
240 (c)
9. ali=8/8-3/8
=5/8
mira=5/5-2/5
=3/5
=5/8+3/5
=25/40+24/40
=49/40
=1 9/4 jawab=B
10.ab=5
bc=12
ac=ab²+bc²
=5²+12²
=25+144
=169
=√169
=13 jawab C