Answer:18.5
Step-by-step explanation:
Answer:
18.5
50.3
area for circle formula=πr^2
r=4
π4^2 which is 50.3 rounded
.1x7 8, 6
Acute
7² + 9² ? 11²
49 + 81 ? 121
130 is greater than 121, so it is an acute triangle
