🧱 Civil Construction Guide — Area Calculators
Rectangle Area Calculator
Area = Length × Width
Triangle Area Calculator
Area = 0.5 × Base × Height
Circle Area Calculator
Area = π × r²
Parallelogram Area Calculator
Area = Base × Height
Trapezoid Area Calculator
Area = 0.5 × (a + b) × h
Ellipse Area Calculator
Area = π × a × b (a and b are semi-axes)