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Answered Same Day Feb 18, 2022

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Preeti answered on Feb 18 2022

114 Votes

Microsoft Word - scanned-maths-sa1-wbdzrq0r.docx
WORKING is to be completed on this paper. If you need extra room or to redo a question, note this on
this paper and attach the extra pages used. Be sure to label your work clearly. A formula sheet is at the end
of the paper.
QUESTION 1 (6 MARKS)
Jo baked a cake and iced it (refer to the photo). The diagram represents the dimensions of Jo's cake.
14 cm
28 cm
Photo of Jots cake Diagram of Jo's cake
a) Calculate the surface area of the icing on the cake.
State any assumptions you have made regarding the location of the icing.
The surface area needed for the cake =
= ( surface area of cylinder -area of base (circle)}+ {surface are of cuboid – area of base (rectangle)-
area of base (circle)}
= (2Prh-Pr2) + {2 (lw + wh + lh)- lb- Pr2}
Put the respective values from the diagram
= (2x 22/7 x 6 x 10) – (22/7 x 6 x 6) + { 2x [( 32 x 28 ) + ( 28 x 14) + (32 x 14)] – 28 x 32 - 22/7
x 6 x 6 }
= (377.14 – 113.14) + { 3472 – 896- 113.14}
= 2726.86 cm2
It was assumed that the base of the cake doesn’t require icing.
) Calculate...

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these also need formulas

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