Formulas Used in Unit 10

Perimeter of a rectangle.

Where P = perimeter, l = length, w = width

Area of a rectangle.

A = bh Where A = Area, b = base, h = height

Sum of the interior angles of a polygon.

S = 180(n - 2) Where n = the number of sides, s = sum of the angles

Area of a parallelogram

Screen Shot 2014-03-01 at 8.38.08 PM.png Where A = Area, b = base, h = height

Area of a trapezoid

$A=\frac{1}{2} h(b_1+b_2)$ Where A = Area, h = height, b1 = base 1, b2 = base 2

Area of rhombuses and kites

$A=\frac{1}{2} d_1 d_2$

Surface area of a rectangular prism

Surface area of a triangular prism

SA = Area of three rectangles + Area of two triangles

Volume of a rectangular prism

Where V = volume, = area of the base, = height.

Some people think of this formula as Volume = length x width x height.