Area (using the original hypotenuse) = (1/2) * 9 (original …

Area (using the original hypotenuse) = (1/2) * 9 (original height) * 6 (original base),
Area (using the perpendicular and new base segments) = (1/2) * 6 (base) * p = (1/2) * (4.5 + 1.5) * p.