Area of a circle = circumference of a circle
πr² = 2πr
r²=2πr÷π
r²÷r=2r÷r
r=2
Answer:
±3/5
Step-by-step explanation:
±sqrt(9/25)
We can separate this into
± sqrt(9) / sqrt(25)
Since these are perfect squares
±3/5
The answer to this is false
Answer:
3/20
Step-by-step explanation: