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I don’t understand. Need help:/

What is the area of triangle ABC?


O 10.39
O 31.18
O 124.71
O 62.35


I Dont Understand Need Help What Is The Area Of Triangle ABC O 1039 O 3118 O 12471 O 6235 class=

Sagot :

124.71 i’m pretty sure cause 60 is on both sides
ayu350

Answer:

62.35

Step-by-step explanation:

Triangle ABC is an isosceles triangle. That means Side CA equals Side CB.

Drawing an altitude line from point A, it divides Side CB into halves. 1/2 of 12 = 6. (Let's call that point M)

Side AM^2 = AC^2 - CM^2

---------------------> 12^2 - 6^2 = 144 -36 = 108

AM = [tex]\sqrt{108}[/tex] = 6[tex]\sqrt{3}[/tex]

To find the area: CB * AM * 1/2

---------------------> 12 *  6[tex]\sqrt{3}[/tex] * 1/2 = 36[tex]\sqrt{3}[/tex]

36[tex]\sqrt{3}[/tex] as a decimal is approximately 62.35