Math Formulas for Filling & Wrapping Unit Test
Area of Polygons:
Triangle A = bh / 2
Square A = s x s
Pentagon divide the polygon into triangles, squares, or trapezoids
than, find sum of areas of those polygons
Hexagon divide the polygon into triangles, squares, or trapezoids
than, find sum of areas of those polygons
Trapezoid A = (b1 + b2) x h / 2
A = sum of two parallel segments x height of polygon div. 2
Circle A = pi x radius x radius
Circumference of a Circle C = pi x diameter
Surface Area of Prisms: find the sum of all the faces of the polygon
- remember to include top and bottom of prism
Volume of Prisms :
Triangular V = Bh (area of base x height of prism)
V = bh/2 x h
Square V = Bh (area of base x height of prism)
Rectangular V = Bh (area of base x height of prism)
V = lw x h
Pentagonal V = Bh (area of base x height of prism)
Hexagonal V = Bh (area of base x height of prism)
Volume of Cylinders: V = (TT x r x r) x h
V = (3.14 x radius x radius) x height of cylinder
Volume of Cones & V = Bh / 3
Pyramids V = (area of base x height of cone, or pyramid, divided by 3)
