1. Edexcel GCSE Maths Spec B – Modular: Booster C © Pearson Education 2010. This document may have been altered from the original. To understand how to answer a question about surface areas of prisms. Objectives

2. Edexcel GCSE Maths Spec B – Modular: Booster C © Pearson Education 2010. This document may have been altered from the original. 1. A glass paperweight is made in the shape of a right-angled triangular prism, as shown in the diagram below. Find the surface area of the paperweight. Take each face in turn and find its area.

3. Edexcel GCSE Maths Spec B – Modular: Booster C © Pearson Education 2010. This document may have been altered from the original. 1. Find the surface area of the prism shown in the diagram below. Total so far = Both ends are identical right-angled triangles. Area of one triangle = ½ x base x height = ½ x 12 x 16 = 6 x 16 = 96 cm 2

4. Edexcel GCSE Maths Spec B – Modular: Booster C © Pearson Education 2010. This document may have been altered from the original. Total so far = 2 x 96 + 1. Find the surface area of the prism shown in the diagram below. Both ends are identical right-angled triangles. Area of one triangle = ½ x base x height = ½ x 12 x 16 = 6 x 16 = 96 cm 2

5. Edexcel GCSE Maths Spec B – Modular: Booster C © Pearson Education 2010. This document may have been altered from the original. 1. Find the surface area of the prism shown in the diagram below. Total so far = 2 x 96 + Then consider each rectangular face.

6. Edexcel GCSE Maths Spec B – Modular: Booster C © Pearson Education 2010. This document may have been altered from the original. 1. Find the surface area of the prism shown in the diagram below. Total so far = 2 x 96 + Area of ABCD = length x width = 20 x 30 = 600cm 2

7. Edexcel GCSE Maths Spec B – Modular: Booster C © Pearson Education 2010. This document may have been altered from the original. 1. Find the surface area of the prism shown in the diagram below. Total so far = 2 x 96 + 600 + Area of CDEF = length x width = 12 x 30 = 360cm 2

8. Edexcel GCSE Maths Spec B – Modular: Booster C © Pearson Education 2010. This document may have been altered from the original. 1. Find the surface area of the prism shown in the diagram below. Total so far = 2 x 96 + 600 + 360 + Area of ABFE = length x width = 16 x 30 = 480cm 2

9. Edexcel GCSE Maths Spec B – Modular: Booster C © Pearson Education 2010. This document may have been altered from the original. 1. Find the surface area of the prism shown in the diagram below. Total so far = 2 x 96 + 600 + 360 + 480 Area of ABFE = length x width = 16 x 30 = 480cm 2

10. Edexcel GCSE Maths Spec B – Modular: Booster C © Pearson Education 2010. This document may have been altered from the original. 1. Find the surface area of the prism shown in the diagram below. Total so far = 2 x 96 + 600 + 360 + 480 = 1632cm 2

11. Edexcel GCSE Maths Spec B – Modular: Booster C © Pearson Education 2010. This document may have been altered from the original. Consider each face separately and think about whether or not you know a formula for finding the area. Summary Use your formula sheet if you need help with these. Carefully work out each area in turn and then add up at the end.