Question 1089426
surface area(SA) = 2 × pi × r2  +   2 × pi × r × h
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we do not include the area of the circle on the surface of the pool since it is water  :-)
Rendered area(RA) = (pi × r^2)  +   (2 × pi × r × h)
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RA = (22÷7)×((1.8)^2)+2×(22÷7)×(1.8)×(1.2) = 23.76 sq m
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