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19.2
To solve the area of a triangle, multiply half the legnth of the base of the base by the height
la:
A=2/1bh
where A is the area, b is the base, and h is the height.
In this case, the base is 6.4 cm and the height is 6 cm. So, the area is:
A=2/1(6.4)(6)
A=19.2 cm2
The area of the triangle is 19.2 square centimeters.