pdf Surface Area of Rectangular & Triangular Prisms Using Nets New

This surface area worksheet gives students mixed practice finding the total surface area of rectangular and triangular prisms. Students analyze six nets, identify the necessary dimensions, and apply the appropriate surface area formula for each three-dimensional figure.

For rectangular prisms, students use \(SA = 2(lw + lh + wh)\). For triangular prisms, students find the area of each triangular base using \(B = \frac{1}{2}ba\), calculate the perimeter of the triangular base, and apply \(SA = 2B + PH\). The nets help students connect the faces of each solid to the terms in the formulas.

This resource works well for guided practice, independent practice, homework, review, intervention, or formative assessment. The included answer key shows each formula, substitution, calculation, and final surface area in square units.

Skills Assessed

• Finding the surface area of rectangular prisms
• Finding the surface area of triangular prisms
• Interpreting nets of three-dimensional figures
• Applying \(SA = 2(lw + lh + wh)\)
• Applying \(SA = 2B + PH\)
• Finding the area of a triangular base
• Calculating the perimeter of a triangular base
• Expressing surface area in square units

Details

• 2 pages
• 6 surface-area problems
• 3 rectangular prisms
• 3 triangular prisms
• Nets and labeled dimensions included
• Whole-number dimensions
• Answer key included
• Formula substitutions and calculations included

ID# 0973