If this attribute is not specified, this <input> element must be a descendant of a <form> element. This attribute enables you to place <input> elements anywhere within a document, not just as descendants of their form elements.
A circular area of 5 miles radius covers 50265.5 acres (to 1 dp) Area = pi*radius2, which with radius in miles will give you area as 78.53982 square miles, then multiply by 64 â¦ 0, since there are 640 acres in 1 square mile.
Best Answer: An acre is approximately 211 ft x 211 ft it is a square unit of measure. One acre comprises 4,840 square yards, 43,560 square feet. A mile is 5,280 ft long it is a linear unit of measure. If you want to know measurements of an acre in square miles it is 211/5280 x 211/5280 square miles. An acre is much much smaller than a square mile. If you want to know how many acres in a square mile take the inverse of that small number 1/x.