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retardative    
a. 延缓的;使迟滞的

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    Although often referred to as the area of a circle in informal contexts, strictly speaking, the term disk refers to the interior region of the circle, while circle is reserved for the boundary only, which is a curve and covers no area itself Therefore, the area of a disk is the more precise phrase for the area enclosed by a circle
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  • Area Of A Circle Calculator - Lite Tools
    The Area Of A Circle Calculator is an intuitive and precise math tool created to find the exact two-dimensional space contained within a perfect circle Whether you are finding the size of a round rug, a swimming pool or measuring geometric figures, this tool quickly outputs the area, circumference and diameter based on a single radius input
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    Free online area of a circle calculator which helps you calculate the are of any circle, given its radius Supports many different metrics such as in, ft, yd, mm, cm, meters, etc





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