The radius of a circle or a sphere is the distance between the center and the edge. The radius can be used to calculate a circle's diameter, area and circumference. Likewise, a sphere's volume is ...
When working with circles it is important to recognise and be able to name different parts of the circle. A segment of a circle is an area enclosed by a chord and an arc. What is the name given to a ...
OBJECTIVE: To compare body mass index (BMI), waist–hip ratio (WHR) and waist circumference as predictors of all-cause mortality among the elderly. DESIGN: Population-based cohort study; mean follow-up ...
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