Noel correctly adds the length of three sides of a rectangle and gets 88 cm her brother Ryan correctly adds the lengths of three sides of the same rectangle and gets 80cm. What is the number of cm in the perimeter of the rectangle. I was having this discussion with another teacher and we need a third opinion.
Tooth crowns. A tooth crown or dental crown is a tooth-shaped sleeve made of porcelain or metal or a combination of both that is placed over a tooth. The dentist will match it up to the shape and colour of your other teeth.
1 The crown protects the tooth or filling while a permanent crown is made from another material. 2  For children, a stainless steel crown is commonly used to fit over a primary tooth that's been prepared to fit it. 3  The crown covers the entire tooth and protects it from further decay.