Given that (x, y) = (5, 10), find r.

a.2√5

b.5√2

c.5√5

d.5√10

I am considering the point you have given is point on a circumference of a circle and center of circle is (0,0) and we have to calculate radius

so radius = root((x-h)^2 + (y-k)^2)

where (h,k) is center of circle

so r = root((5-0)^2+(10-0)^2)

= √(100+25) = √125 = 5√5

so answer is option c

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)