Please guys I really need help like right now
Answer:
10.5
Step-by-step explanation:
ok use Pythagorean theorem
a²+b²=c²
3²+1.25²=c²
9+1.6=c²
√10.5≈ 3.2
3²+1.25²=3.2²
OR divide 13 by 4 because the proportion used is 4:1
13/4= 10.5