Area and Volume of Polygons

What is surface area?

• the sum of the areas of all of its faces

• length times width

• the space inside a shape

• solid whose faces are all polygons
  

What is a net?

• something you can fish with

•  two-dimensional representation of a solid, which is one way to find surface area

• a thing the cafeteria workers use to cover their hair

• the space inside a 3D shape

What is the area of the trapezoid? Use the formula A=\frac{1}{2}h\left(b_1+b_2\right)

Find the area of the triangle using A =1/2bh.

What is the formula to find the area of this shape?

• d₁d₂ ÷ 2

• l×w

• (b₁ + b₂)÷2

• 1/2(ap)

Find the total area of the figure by dividing it into a square and rectangle. Use the formula A = lw.

The figure represents a large wedge of chocolate. How much foil would be needed to completely cover the chocolate? Remember to use the formulas A =1/2bh for the triangles and A =lw for the rectangles.

Which of the definitions below defines surface area?

• the number of square units needed to cover all of the surfaces of a three dimensional figure.

• a flat surface of a three-dimensional figure

• the amount of space occupied by cubic units inside a three dimensional figure.

• a three-dimensional figure containing two congruent and parallel faces that are polygons

Which of the definitions below defines volume?

• the number of square units needed to cover all of the surfaces of a three dimensional figure.

• a flat surface of a three-dimensional figure

• the amount of space occupied by cubic units inside a three dimensional figure.

• a three-dimensional figure containing two congruent and parallel faces that are polygons

What is the volume of this rectangular prism?