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Sagot :
Answer:
[tex]\tt b=20[/tex]
Step-by-step explanation:
1)
Use the Pythagorean theorem
[tex]\tt b^2+15^2=25^2[/tex]
[tex]\tt b^2+15* 15=25*25[/tex]
[tex]\tt b^2+225=625[/tex]
[tex]\tt b^2=625-225[/tex]
[tex]\tt b^2=400[/tex]
[tex]\tt b^2=20*20[/tex]
[tex]\tt b^2=20^2[/tex]
[tex]\tt b=20[/tex]
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