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The lengths of the legs of a right triangle are 15 cm and 20 cm. What is the length of the hypotenuse?   A. 13.23 centimeters   B. 25 centimeters   C. 5.92 centimeters   D. 35 centimeters


Sagot :

The answer is B
15^2 + 20^2= 625
And 625 under square rout = 25

[tex]a;b-legs\\c-hyperotenuse\\\\Pythagoras\ theorem:\ \ a^2+b^2=c^2\\\\substitute:\\\\c^2=15^2+20^2\\\\c^2=225+400\\\\c^2=625\\\\c=\sqrt{625}\\\\c=25\ (cm)\\\\\\Answer:B[/tex]
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