Acircular region has a population of about 15,500 people and a population density of about 775 people per square kilometer. find the radius of the region. round your answer to the nearest tenth. i got 1.4, but the answer is 2.5. can anyone tell me how the rough steps? my hurts

2.5 km

Step-by-step explanation:

First, find the area of the region:

So, there are square kilometers.

Now, let x kilometers be the radius of the circular region, then

To the nearest tenth this is 2.5 km.

answer: options?

step-by-step explanation:

yes the total will be same because in both of them the expression.is rearranged but their sign remains the same hence it hss just been shuffled