Answer:
10.99
Step-by-step explanation:
We know it's a quarter of a circle since the angle is [tex]90[/tex]°
Therefore we can calculate like a normal circle and divide by 4.
The formula for calculating the circumference is 2 times pi times the radius or [tex]2\pi r[/tex] .
[tex]\pi=3.14\\2\times\pi=6.28\\6.28\times7=43.96\\43.96\div4=10.99[/tex]
