Aussie Maths & Science Teachers: Save your time with SmarterEd
A letterbox, which has been constructed by joining a half cylinder and rectangular prism, needs to be painted on each external surface.
Find the surface area of the letterbox, giving your answer correct to the nearest square centimetre. (3 marks)
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Calculate the surface area of the half-cylinder below (including the base), giving your answer correct to two decimal places. (3 marks)
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Calculate the surface area of the cylinder below, giving your answer correct to two decimal places. (2 marks)
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The solid shown is made of a cylinder with a hemisphere (half a sphere) on top.
What is the total surface area of the solid, to the nearest square centimetre?
A shade shelter is to be constructed in the shape of half a cylinder with open ends. The diameter is 3.8 m and the length is 10 m.
The curved roof is to be made of plastic sheeting.
What area of plastic sheeting is required, to the nearest m²? (2 marks)
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A grain silo is made up of a cylinder with a hemisphere (half a sphere) on top. The outside of the silo is to be painted.
What is the area to be painted?