Area of triangle = 1/2 x base x height
17.5 = 1/2 x 7 x height
17.5 = 3.5 x height
height = 17.5 /3.5 = 5 meters
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Height = 8 cm
The squared area of a triangle is half of its base times its perpendicular height. Or as: 0.5*base*perpendicular height = area of a triangle
27cm squared
17.5cm squared
31.5 units squared.31.5