Circle Area Calculator
How to use this Circle Area Calculator 🤔
- Enter ✎ value for radius (r).
- As soon as you enter the required input value(s), the Circle Area is calculated immediately, and displaed in the output section (present under input section).
Calculation
Once you enter the input values in the calculator, the output parameters are calculated.
Examples
The following examples cover how to calcualte the Area when radius is given.
1. What is the Area of Circle whose radius is 5 units?
Answer
Given:
The formula to find the Area of a Circle is:
A = \(π r ^2\)
Substitute given values in the above formula.
A = \(π \times5^2\)
A = 78.54 square units
∴ Area, A = 78.54 square units
2. What is the Area of Circle whose radius is 1 units?
Answer
Given:
The formula to find the Area of a Circle is:
A = \(π r ^2\)
Substitute given values in the above formula.
A = \(π \times1^2\)
A = 3.14 square units
∴ Area, A = 3.14 square units
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{
"r": 5
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"type": "Calculate",
"title": "Circle Area",
"category": "Geometry",
"shape": "Circle",
"formula_mathjax": "\\(π r ^2\\)",
"formula_mathjax_sub": "\\(π \\times r ^2\\)",
"formula": "Math.PI * ( r ** 2)",
"op_label": "Area",
"output_unit": "square units",
"description": "The circle area calculator calculates the area of a circle by taking its radius as input.",
"explanation": "The area of a circle is defined as the area enclosed in the circular shape.",
"examples_data": "<h2>Examples</h2><p>The following examples cover how to calcualte the Area when radius is given.</p><div class=\"example\"><h3 class=\"question\"><span class=\"example_n\">1.</span> What is the Area of Circle whose radius is 5 units?</h3><h4 class=\"answer\">Answer</h4><p>Given:</p><ul><li>radius, r = 5 units</ul><p>The formula to find the Area of a Circle is:</p><p class=\"tabspace\">A = \\(π r ^2\\)</p><p>Substitute given values in the above formula.</p><p class=\"tabspace\">A = \\(π \\times5^2\\)</p><p class=\"tabspace\">A = 78.54 square units</p><p class=\"tabspace answer\">∴ Area, A = 78.54 square units</p></div><div class=\"example\"><h3 class=\"question\"><span class=\"example_n\">2.</span> What is the Area of Circle whose radius is 1 units?</h3><h4 class=\"answer\">Answer</h4><p>Given:</p><ul><li>radius, r = 1 units</ul><p>The formula to find the Area of a Circle is:</p><p class=\"tabspace\">A = \\(π r ^2\\)</p><p>Substitute given values in the above formula.</p><p class=\"tabspace\">A = \\(π \\times1^2\\)</p><p class=\"tabspace\">A = 3.14 square units</p><p class=\"tabspace answer\">∴ Area, A = 3.14 square units</p></div>",
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