What is the square root of nine?

How many of the 250 grandparents in the population would you expect to prefer online shopping with merchant a? merchant a: 4 merchant b: 6 merchant c: 2 merchant d: 3 other: 5 none: 5 answer choices: a.about 4 b.about 8 c.about 40 d.about 21

The center of the circumscribed circle lies on line segment and the longest side of the triangle is equal to the of the circle.

Need 50 will mark brainliest answer. find the lengths of all the sides and the measures of the angles.