The perimeter of a rectangle is 225 cm. The length is three times the width. What is the width?( please help due tonight and show work!)

Ascatterplot is produced to compare the size of a school building to the number of students at that school who play an instrument. there are 12 data points, each representing a different school. the points are widely dispersed on the scatterplot without a pattern of grouping. which statement could be true

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

When you answer this can you explain