formulas

Area of kite/rhombus - d1d2/2

area of triangle - bh/2

Area of rectangle - LW

CIRCUMFERENCE - c=2 pie r or C=pie d

Area of circle - pie r²

Pythagorean theorem - a² + b² = c²

Sector area - AOS= 0/360 time pie r²

Central angle - 360 divided by n

Regular polygon - A = aP divided by 2

lateral area - area around the shape.

Surface area - the total area of all faces of 3D object including bases and top.