Surface Area of Triangular Prisms

How do you find the surface area of a 3 dimensional object?

• Divide the area of the base by 2 and multiply by the height.

• Divide the sum of the bases and multiply by the height

• Multiply the sum of all the faces by two.

• Find the sum of all of the areas of all of the faces.

What 3D solid does this net create?

• Triangular Prism

• Triangular Pyramid

• Square Prism

• Rectangular Pyramid

Tags

CCSS.6.G.A.4

The base of the equilateral triangle is 5 inches. The length of the rectangle is 15 inches. The height of the triangle is 10 inches. Find the surface area.

Hint: Surface Area = Add all the areas of each face up. A triangular prism has 2 triangular faces (A = 1/2*b*h) and 3 rectangular faces (A = l (height of prism) * w (base of triangle).

• 200 inches

• 300 inches

• 275 inches

Tags

CCSS.7.G.B.6

Find the total surface area of the prism.

Hint: Surface Area = Add all the areas of each face up. A triangular prism has 2 triangular faces (A = 1/2*b*h) and 3 rectangular faces (A = l (height of prism) * w (base of triangle).

• 161 square feet

• 75 square feet

• 172 square feet

• 1,700 square feet

Tags

CCSS.7.G.B.6

Jesse needs to wrap the present shown below. How much wrapping paper would he need?

How much wrapping paper is needed?

Hint: Surface Area = Add all the areas of each face up. A triangular prism has 2 triangular faces (A = 1/2*b*h) and 3 rectangular faces (A = l (height of prism) * w (base of triangle).

• 300 in²

• 327 in²

• 558 in²

• 354 in²

Tags

CCSS.7.G.B.6