Question

Va rog ajutati-ma la mate cu figura va rog repedee

Answer 1

se aplica Teorema lui PitAGORA


$A) AB^{2}= BC^{2}+AC^{2} \\ \\ AB= \sqrt{ BC^{2}+AC^{2} } = \sqrt{ 12^{2}+5^{2} } = \sqrt{144+25}= \sqrt{169}=13$

$B) BC^{2}=AB^{2}-AC^{2} \\ \\ BC= \sqrt{ AB^{2}-AC^{2} } = \sqrt{ 20^{2}-16^{2} } = \sqrt{400-256}= \sqrt{144}=12$

$C) AC^{2}= AB^{2}+BC^{2} \\ \\ AC= \sqrt{ AB^{2}-BC^{2} } = \sqrt{ 41^{2}-40^{2} } = \sqrt{1681-1600}= \sqrt{81}=9$