formula of perimeter and area
Answers
Perimeter formulaSquare4 × sideRectangle2 × (length + width)
Parallelogram2 × (side1 + side2)
Triangleside1 + side2 + side3
Regular n-polygonn × sideTrapezoidheight × (base1 + base2) / 2Trapezoidbase1 + base2 + height × [csc(theta1) + csc(theta2)]
Circle2 × pi × radiusEllipse4 × radius1 × E(k,pi/2)
Answer:
Perimeter formula
Square 4 × side
Rectangle 2 × (length + width)
Parallelogram 2 × (side1 + side2)
Triangle side1 + side2 + side3
Regular n-polygon n × side
Trapezoid height × (base1 + base2) / 2
Trapezoid base1 + base2 + height × [csc(theta1) + csc(theta2)]
Circle 2 × pi × radius
Ellipse 4 × radius1 × E(k,pi/2)
E(k,pi/2) is the Complete Elliptic Integral of the Second Kind
k = (1/radius1) × sqrt(radius12 - radius22)
Area formula
Square side2
Rectangle length × width
Parallelogram base × height
Triangle base × height / 2
Regular n-polygon (1/4) × n × side2 × cot(pi/n)
Trapezoid height × (base1 + base2) / 2
Circle pi × radius2
Ellipse pi × radius1 × radius2
Cube (surface) 6 × side2
Sphere (surface) 4 × pi × radius2
Cylinder (surface of side) perimeter of circle × height
2 × pi × radius × height
Cylinder (whole surface) Areas of top and bottom circles + Area of the side
2(pi × radius2) + 2 × pi × radius × height
Cone (surface) pi × radius × side
Torus (surface) pi2 × (radius22 - radius12