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  1. Calculate the surface area of a sphere with diameter 6.4 cm, to the nearest tenth of a centimetre.


  2. The Great Pyramid of Giza has square base length of 230.4 m and a slant height of 186.4 m. Calculate the surface area of the portion of the pyramid that is exposed to sunlight. Round your answer to the nearest tenth.




  3. Determine the combined surface area of all 4 AAA rechargeable batteries, to the nearest
    tenth of a millimetre.






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