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lisov135 [29]
2 years ago
12

8. (06.04 MC)

Mathematics
1 answer:
Leno4ka [110]2 years ago
3 0

Check the picture below.

the area of the triangle whose base is AC and height is BD, is the same area of the triangle whose base is AB and altitude is BC, namely

A=\cfrac{1}{2}(\stackrel{b}{6})(\stackrel{h}{6})\implies 18

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