So that the water can drain to the sides.
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Measure the length of your stride and call it S. Then walk from the curb to your front door on eh sidewalk and count the number of strides. Say it is N. Then the length is S x N = Length in whatever unit you measured your stride.
Detectable warning tiles, also known as tactile paving, are required by law in several areas to assist visually impaired individuals in navigating public spaces. In the United States, the Americans with Disabilities Act (ADA) requires detectable warning tiles at transit platform edges, curb ramps, and vehicular ways. They are also commonly used in public areas such as at crosswalks, pedestrian crossings, and at the edges of stairways. In other countries, similar regulations or guidelines may be in place to ensure accessibility for visually impaired individuals in public spaces.
Fun question. IAAF standards require 84.39 straightaways on both sides and 115.61m curves, measured from either 20 cm or 30 cm from the inside of the first lane, depending upon whether there is a no curb or rail or if there is a curb or rail. This should not change the area of the space inside the point of measurement, though. The lengths of the two curves add to a full circle, so 2 x pi x radius = 231.22. Solving for r gets you 36.8, which means the width of the internal rectangle is 73.6 (2 x radius). The area of the internal rectangle is 84.39 x 73.4 (length x width), with a product of 6211.1 (approximate, since pi was used in the calculations). The area of the two halves of a circle on each end is pi x 36.8 squared (pi x radius squared), with a product of 4254.47 meters squared (again, approximate since pi was used in the calculations) The sum of the two areas is 10,465.57 meters squared (approx.)
Well, honey, that fancy name you threw at me is just a brand of amoxicillin-clavulanic acid, a combination antibiotic used to treat bacterial infections. It works by stopping the growth of bacteria, so it's like sending in the cavalry to kick those germs to the curb. Just make sure to follow your doctor's orders and finish the entire course, or those pesky bacteria might come back for round two.
Oh, dude, 4.2 as a whole number is 4. I mean, it's like the decimal part is just chilling there, not invited to the whole number party. So, you just round down and kick the .2 to the curb. It's like telling the decimal, "Sorry, not sorry, you can't sit with us."