Question: 25. A rectangular block has base dimensions 2a cm by 3a cm. Given that its volume is 1800 cm3, find the total surface area, A

25. A rectangular block has base dimensions 2a cm by 3a

25. A rectangular block has base dimensions 2a cm by 3a cm. Given that its volume is 1800 cm3, find the total surface area, A cm2, in terms of a. Calculate the value of a for which A has a stationary value. Find this stationary value of A and determine wherether it is a maximum or minimum point

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