Answer:
Step-by-step explanation:
hello :
if : r the radius ( r ≠0)
the circumference is : 2πr
the area is : πr²
so : πr² = 2πr
simplify by : r π you have : r=2
Answer:
8
Step-by-step explanation:
Answer:

Step-by-step explanation:


cross out the common factor.

Answer: 19
Step-by-step explanation:
570 divided by 30