Answer:
7.5 in²
Explanation:
You want the area of a triangle shown as having a base of 6 inches and a height of 2.5 inches.
Area
The formula for the area of a triangle is ...
A = 1/2bh
where b is the base length, and h is the height.
Application
The figure shows the base of the triangle as 6 in, and the height as 2.5 in. This means the area is ...
A = 1/2(6 in)(2.5 in) = 7.5 in²
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Additional comment
The attachments show the triangle to be overs-specified. If the side dimensions are correct, the area is actually about 7.48 square inches. If the base and height are correct, at least one side length is slightly off.