How to Find the Area and Perimeter of a Rectangle with Square Roots

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How to find the area and perimeter of a rectangle using radicals. This is a good review of adding, subtracting, and multiplying square roots.

0:00 Simplifying radicals
1:26 Find the Area
2:00 Find the Perimeter
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Area=Lb
Area=4 root27×root12
Area=4×root9×root3×2×root3
Arrange
Area=4×2×root9×root3×root3
Area=8×3×3
Area=72

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