Calculating Surface Area of Prisms

What does the presence of hash marks on the figure indicate?

• The figure is a square

• All sides with hash marks are of equal length

• Each side with a hash mark is of different length

• The figure is a rectangle

What is the formula for lateral surface area?

• Lateral surface area = perimeter of the base / height

• Lateral surface area = 2 x base area + perimeter of base x height

• Lateral surface area = perimeter of the base x height

• Lateral surface area = base area x height

How many identical bases does the triangular prism have?

• 2

• 3

• 1

• 4

How do you calculate the perimeter of the base for this triangular prism?

• Multiply the base by 2 and add the height

• Add the length and width of the rectangle

• Add the length of all sides of the triangle

• Multiply the base by the height

What is the lateral surface area of the prism?

• 210 square miles

• 30 square miles

• 60 square miles

• 150 square miles

What is the height of the prism?

• 12 miles

• 30 miles

• 13 miles

• 5 miles

What is the correct formula to find the area of a triangle?

• Base x height

• 1/2 base x height

• Base + height

• 1/2 base + height

What is the area of one of the triangular bases?

• 15 square miles

• 30 square miles

• 120 square miles

• 60 square miles

What is the total surface area of the prism?

• 240 square miles

• 180 square miles

• 210 square miles

• 150 square miles

Why do we multiply the area of one base by 2 to find the area of the bases?

• It's a mistake; we should not multiply by 2

• To double the total surface area

• To account for the lateral surface area

• Because the prism has two bases