What does a diameter look like in math?

What is 809.5732 rounded to the nearest hundred? What is the sq ft of a 10 sided octagon with 4 ft sides? What is the formula to calculate 0 to 60 times? How many acres is 313632 sq feet? True or false a velocity of 50 rad per min is a linear velocity? What is double 836? How many 1 ft square tiles are in a room with an area of 64 ft? What happened in the 17 century? Is 0.45 less than 0.8? How do you convert 2 kilometers to meters? How many liters of water are used to water the grass? On a line graph the ratio of the change in the y variable to the corresponding change in the x variable is called a lines what? What number does VI stand for? Do you need to know the length of all the sides of one triangle to find a missing length of a similar triangle? What is 736 simplified? How many yards of concrete needed for 24' X 30' X 4 slab? What is the volume of a box with dimensions of 15.6 cm x 0.312 m x 59.1 mm? What kind of number is 12.36333? How many inches in 1.167 feet? What if your light truck weights 3500 kg. you drive up a gentle slope that is 0.5 km long. at the top of the slop you are 200 m higher in elevation than when you started. assuming no friction what for?