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.
Acres To Square Miles Conversion. For other units of area conversion, please go to Area Conversion. Acres to square miles conversion factor is 0.0015625. To find out how many square miles in acres, multiply by the factor or simply use the converter below. 1 Acre = 0.0015625 Square Miles. Acre is an imperial, US customary systems area unit. Used commonly for measuring the land, in agriculture and forestry. The abbreviation is ac.