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Starter Questions

Starter Questions. Q1. 12.5% of 360. Q2. Calculate 5 + 6 x 7. Q3. Solve for y 2 ( y – 5 ) = y + 3. 1. Surface Area. Learning Intentions. To be able to find the surface area of a triangular prism. Triangle Area =. 4cm. Example Find the surface area of the right angle prism.

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Starter Questions

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  1. Starter Questions Q1. 12.5% of 360 Q2. Calculate 5 + 6 x 7 Q3. Solve for y 2( y – 5 ) = y + 3 1

  2. Surface Area Learning Intentions To be able to find the surface area of a triangular prism

  3. Triangle Area = 4cm Example Find the surface area of the right angle prism Working = 2 x3 =6cm2 Rectangle 1 Area = l x b = 3 x10 =30cm2 5cm Rectangle 2 Area = l x b 3cm 10cm = 4 x 10 =40cm2 Rectangle 3 Area = l x b = 5 x 10 =50cm2 2 triangles the same 1 rectangle 3cm by 10cm Total Area = 6+6+30+40+50 = 132cm2 1 rectangle 4cm by 10cm 1 rectangle 5cm by 10cm

  4. Triangle Area = 4cm 10cm 4cm Surface Areaofa Triangular Prism Working = 2 x4 = 8 cm2 5cm Rectangle 1 Area = l x b = 5 x10 =50cm2 Rectangle 2Area = l x b = 5 x10 =50cm2 2 triangles the same Rectangle 3 Area = l x b 2 rectangle the same 5cm by 10cm = 4 x 10 =40cm2 1 rectangle 4cm by 10cm Total Area = 8+8+50+50+40 = 156cm2

  5. Surface Area Triangular Prism Now try Ex 7.1 Ch 2 Pg 33

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