01-02-2022
Mathematics

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:)Answer in simplest radical form.(and show work please)

Answer in simplest radical formand show work please class=

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devishri1977 devishri1977

02-02-2022

Answer:

Step-by-step explanation:

Use Pythagorean theorem,

Base² + altitude² =hypotenuse²

x² + 19² = 21²

x² + 361 = 441

x² = 441 - 361

x² = 80

[tex]x =\sqrt{80}=\sqrt{2*2*2*2*5}=2*2*\sqrt{5}=4\sqrt{5}[/tex]

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