Algebra-2

1. Since the amount of paint  varies directly as the square of the height , we can write the relationship as , where  is the proportionality constant.

2. First, find the value of  using the given information that 5 liters are needed for a wall 3 m high.

   - Substitute  and  into the equation :

     - .

     -

Click "Show Answer" to reveal the answer and analysis