Surface Area Calculations and Circular Measures

Rectangular Prisms: Surface Area (SA) formula is SA = 2lw + 2lh + 2hw, where l = length, w = width, h = height.
Cubes: Surface Area is calculated using SA = 6s², with 's' representing the length of a side.
Right Triangular Prisms: Surface Area given by SA = wh + lw + lp + ls, where w = width, l = length, p = slant height, and s = side.
Cylinders: The formula for Surface Area is SA = 2πrh + 2πr², with 'r' as the radius and 'h' as the height.

Pi (π): An irrational number approximately equal to 3.14, extending infinitely beyond the decimal.
Circumference: The distance around a circle calculated by C = πd, where 'd' is the diameter.
Area of a Circle: Area is represented by A = πr², indicating the space a circle covers.

Area of a Sector: Formula A = (n/360)πr², representing a fractional part of a circle, akin to a slice of pie.
Area of Quadrilaterals: Area is calculated using A = b × h, applicable to shapes with four sides (excluding trapezoids).
Area of Triangles: The area formula is A = 1/2 b × h, measuring the space within a triangular shape.
Area of Trapezoids: Formula is [\frac{(b1 + b2)}{2} \times h], where b1 and b2 are the two bases, and h is the height.

L = Length, s = Side (square), D = Diameter, H = Height, π = Pi (3.14), R = Radius, C = Circumference, B = Base, P = Triangle side, S = Side, W = Width.

Diameter: A line segment that passes through the center of a circle, connecting two points on the circumference, equivalent to 2 times the radius.
Radius: A segment from the center of a circle to a point on its edge, measuring half of the diameter.