11.6 Surface Area of Pyramids

11.6 Surface Area of Pyramids

by Hanna Drakos

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​Have your books and calculators ready to complete the examples and questions :)

​Example 1

​Copy the examples into your maths book!

​The questions we will do already give you the slant length.

​Example 2

Multiple Choice

What 3D solid does this net create?

• Triangular Pyramid

• Triangular Prism

• Square Pyramid

• Square Prism

Multiple Choice

What 3D solid does this net create?

• Triangular Prism

• Triangular Pyramid

• Triangular Sphere

• Triangular Polygon

Multiple Choice

A square pyramid is covered with decorative wrapping paper with no overlap.  The net of the box is shown on the right.  How many square centimeters of wrapping paper are needed to cover the surfaces of the box? 

• 108 cm²

• 324 cm²

• 180 cm²

• 432 cm²

Multiple Choice

_{^{Find the Surface Area}}

• 15m²

• 16m²

• 18m²

• 20m²

Multiple Choice

Find the surface area of the pyramid. 

• 168 m²

• 228 m²

• 390 m²

• 196 m²

Multiple Choice

• $$712.2cm^2$$  

• $$700cm^2$$  

• $$692.1cm^2$$  

• $$760.5cm^2$$  

​Question... Complete the working in your book and then select the answer to a) and b) on each of the next two slides.

Multiple Choice

Answer to a)

• $$1946m^2$$  

• $$1828m^2$$  

• $$1987m^2$$  

• $$1840m^2$$  

Multiple Choice

Answer to b)

• $$About\ 3.6m^2$$  

• $$About\ 2.5m^2$$  

• $$About\ 3m^2$$  

• $$About\ 2m^2$$  

​Question... Complete the working in your book and then select the answer to a) , b) and c) on each of the next three slides.

Multiple Choice

Answer to a)

• $$100m^2$$  

• $$102m^2$$  

• $$106m^2$$  

• $$110m^2$$  

Multiple Choice

Answer to b)

• $$6.84m^2$$  

• $$8.5m^2$$  

• $$5.28m^2$$  

• $$6.92m^2$$  

Multiple Choice

Answer to c)

• $$68.12m^2$$  

• $$79.15m^2$$  

• $$80.15m^2$$  

• $$99.16m^2$$