Calculator Use. Use this calculator if you know 2 values for the rectangle, including 1 side length, along with area, perimeter or diagonals and you can calculate the other 3 rectangle variables.
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Our average satisfaction rating is 4.8 out of 5.
Clarify math questions
To ensure you are clarifying the math question correctly, re-read the question and make sure you understand what is being asked. If you are still unsure, ask a friend or teacher for help.
Decide mathematic problems
With Decide math, you can take the guesswork out of math and get the answers you need quickly and easily.
Provide multiple ways
You can provide multiple ways to do something by listing them out, providing a step-by-step guide, or giving a few options to choose from.