Answer:
Step-by-step explanation:
The area of a circle is :A= π r² r : the radius
A= 8π square units
so : π r² = 8π
r² = 8
r = √8 = √(4 × 2) =√4×√2
r = 2√2 units
If there is 20 pencils there will be 5 erasers 20:5
Answer:
-9.661
Step-by-step explanation:
