What is the perimeter of the octagon shown in the picture?

Television sizes are based on the length of the diagonal of the television's rectangular screen. so, for example, a 70-inch television is a television having a diagonal screen length of 70 inches. if a 70 inch television's diagonal forms a 29°angle with the base of the screen, what is the vertical height (1) of the screen to the nearest inch? 70 inhin

Which inequality has a dashed boundary line when graphed ?

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16