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Need help with a math question Plz!?

A swimming pool is built in the shape of a rectangular prism with a length of 10.2m, a width of 7.5m and a depth of 1.5m. The floor and the sides of the pool need to be cemented.

a) Calculate the area that is to be cemented.

b) The concreter mismeasured the length of the pool as 9.4m. Calculate the error in the area of calculation.

c) Calculate the percentage error (correct to 1 decimal place) in the area calculation.

(Need to show ALL working out)

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