JENNIEKIMJUNKYUGO
Answered

help me with this. i don't know the answerT_T​

Help Me With This I Dont Know The AnswerTT class=

Sagot :

  • [tex]\rm{AC\:=\:19.7}[/tex]

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Solution

Diameter is perpendicular to the chord if it bisects the chord.

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Pythagorean theorem

leg² + leg² = hypotenuse²

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[tex]\rm{AW\:=\:22\:-\:4\:=\:18}[/tex]

[tex]\rm{CW\:=\:\frac{1}{2}\:CD\:=\:\frac{1}{2}\:×\:16\:=\:8}[/tex]

[tex]\rm{18^2\:+\:8^2\:=\:AC^2}[/tex]

[tex]\rm{324\:+\:64\:=\:AC^2}[/tex]

[tex]\rm{388\:=\:AC^2}[/tex]

[tex]\boxed{ \rm{AC\:=\:\sqrt{388}\:≈\:19.7}}[/tex]

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