Easy
the radius is the distance from the center to a point on the circle
we are given
center=(7,1)
a point=(8,7)
find the distance
distance formula
D=

so the distance between point and center is radius
D=

D=

D=

D=√37 units
radius is √37 units
100 because 99.9999 nearest to any number on there would be 100
Square numbers are numbers with an odd number of factors. For example, 1 and 4 are square numbers.
speed =distance traveled over time taveled... the ansewr will be in kilometres per hour
Answer:
I think number one is 19
Step-by-step explanation: