# Stadium Calculator

> Calculate area and perimeter of a stadium shape: a rectangle capped by two semicircles.

Page: https://askcalculators.com/calculator/stadium-calculator/
Definition: https://askcalculators.com/calculator/stadium-calculator/definition.json
JSON Schema: https://askcalculators.com/calculator/stadium-calculator/schema.json
Version: 1.0.0
Maintained by: AskCalculators (software project; not a credentialed reviewer)
Qualified review: pending. Automated checks do not establish professional approval.
Page status: Live
Review status: Pending

## Use
Open the calculator page and enter values. Query-string parameters can restore and bookmark a calculation.
Example: https://askcalculators.com/calculator/stadium-calculator/?straightLength=20&radius=5

## Inputs
- straightLength: Length of each straight section; type=number; required; default=20; min=0
- radius: Semicircle radius; type=number; required; default=5; min=0.000001

## Outputs
- area: Area; format=number; primary
- perimeter: Perimeter; format=number
- overallLength: Overall length; format=number
- overallWidth: Overall width; format=number

## Formula
area = 2rL + πr²; perimeter = 2L + 2πr

## Rules
- Empty optional inputs are undefined, not zero.
- Hidden conditional inputs are ignored.
- Do not invent missing required inputs.