b=1.8h=5

The area of a triangle is equal to 12 the base times the height.

12⋅(base)⋅(height)

Substitute the values of the base b=1.8 and height h=5 into the formula for the area of a triangle.

12⋅1.8⋅5

Combine 12 and 1.8.

1.82⋅5

Divide 1.8 by 2.

0.9⋅5

Multiply 0.9 by 5.

4.5

4.5

Find the Area triangle (5)(1.8)