Ice is usually used in cool drinks to further cool them - NSC Mathematical Literacy - Question 5 - 2023 - Paper 2
Question 5
Ice is usually used in cool drinks to further cool them.
Ice can be made by freezing water in different shapes.
Cubes are the most common shape used to make ice.
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Worked Solution & Example Answer:Ice is usually used in cool drinks to further cool them - NSC Mathematical Literacy - Question 5 - 2023 - Paper 2
Step 1
Determine the surface area of a cube
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Answer
To determine the surface area of the cube, we will use the formula given:
extSurfaceArea=6imesextsidelength2
Substituting the side length of 4.5 cm into the formula:
extSurfaceArea=6imes(4.5extcm)2
Calculating the square of the side length:
(4.5extcm)2=20.25extcm2
Now substituting back:
extSurfaceArea=6imes20.25extcm2=121.5extcm2
Therefore, the surface area of the cube is 121.5 cm².