Regular Polygons
The formula for the area of a polygon
A= (P*a)/2
Formula for the area of a circle
A = pi*(r)^2
The area formula for a parallelogram
A = b*h
formula for area of a kite or rhombus
A = (d1*d2)/2
The formula to find the top angle of the right triangle in a regular polygon
360/(2n)
The formula for the circumference of a circle
C = pi*d or 2pi*r
The area of a square with side lengths of 8 in
64 square inches
formula for area of a trapezoid
A = (b1+b2)h/2
The area of a regular hexagon with perimeter of 60 cm and an apothem of 12 cm
360 square cm
The area of a circle with a diameter of 12 in exact form
36pi
Area of a rectangle with side lengths of 12 and 25 cm
300 square cm
Area of a kite with a main diagonal of 12 (top part 4, bottom part 8) and smaller (top) sides of 5. (see picture on board)
36 square units
The area of a regular pentagon with a side length of 14 in.
337.2 square in
The circumference of a circle with area 49pi square units
14pi or 43.98 units
The area of a parallelogram with a height of 7 in and partial base of 9 in and a side length of 10in (see picture on board)
113 square in
Area of a trapezoid with a median of 12 in and height of 10 in
120 square inches