How many pairs of perpendicular line does a rectangle have?

Volume of a cone with a radius of 6 inches and the height of 9 inches? What decade is 1865 in? Write as a decimal 284 tenths? If the circumference of a circle is 16 feet what is the radius? What is 1500 times 5 percent? How many cents are in 1 dime? What is the number after 5200? How many days are there in w weeks and w days? What is the rule for adding or multiplying a set of numbers in different order? What are the 3 numbers between 8 and 9 dimes using decimals? How many TNC's are there? What is the length and width of one roll of wallpaper? What does 0.25 on the inside of a ring mean? When tossing 4 coins simultaneously find the probability that at least 1 head is showing? What is the simplest form of 30 over 70? What does 8 equals p in the ss? What is the accuracy of a class 2.5 volt meter? What goes into 54 72 99? How many times will the dice land on a multilple of 2 if rolled 300 times? Is a mansion bigger than a palace?