Area of a Circle Donut From Inner Radius and Area to Outer Radius (Closest Integer) (Level 1)

This math topic focuses on finding the outer radius of a donut-shaped figure, given its area and inner radius. This is part of introductory geometry, specifically concerning circle areas, sectors, and circular segments (often termed "donuts"). Each question provides a specific inner radius and total area, and the challenge is to determine the donut's outer radius. Options for the outer radius are given as multiple-choice answers, requiring an understanding of how to manipulate the formulas for the area of a circle to solve for the outer radius.

Circle Donut From Inner Radius and Area to Outer Radius (Closest Integer)

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Find the outer radius of the donut with an area of 62.83 and an inner radius of 4

r=?r=4