Given right triangle PQR which represents the value of sin p

What is the square root of 45? (step by step working plz)

What is the distance between the points (2 -3) and (-6 4) on the coordinate plane

Mrs. avila is buying a wallpaper border to go on all of her kitchen walls. she wants to buy 5 extra feet of wallpaper border than she needs to be sure she has enough. she buys 55.5 feet of the border. the store owner selling the border uses the width of mrs. avila's kitchen to determine that the length of her kitchen must be 14.5 feet.