Answer:
254.5
Step-by-step explanation:
area of circle = pi (3.142) x 9squared
answer 254.5 or 81 pi
Answer:
171
Step-by-step explanation:
Q~r
find k (k is the constant)
Q=kr
76=k×20
76=20k divide 20 on both sides giving you
k=3.8
then Q=k×r
Q=3.8×45
Q=171
Answer:17
Step-by-step explanation:
Answer:
73
Step-by-step explanation:
Bob
20-4=16
Billy 20+69=89
89-16=73