Can someone answer this question please answer it correctly if it’s corecct I will mark you brainliest please help me please

Answer:
Diameter = 2
Step-by-step explanation:
The radius will always be half of the diameter in a circle. It gives you the information that the radius is 1 unit, so you can use the formula:
d = 2r
d = 2(1)
d = 2
Though in this case, it's not really necessary since you're just adding 1.