Sara buys soil from a gardener to fill a planter.The gardener has 1.5 cubic feet of soil to sell for $6. Sara buys just enough s
oil to fill her planter, which is a prism with a height of 0.5 feet and a square base where each side length is 1 foot. How much will it cost Sara to completely fill her planter with soil?
The first thing you should do is calculate the volume of the prism. We have then: V = h * L ^ 2 Where, L: side of the square base. h: height. Substituting we have: V = (0.5) * (1) ^ 2 = 0.5 feet ^ 3. Then, we can make the following rule of three: 1.5 feet ^ 3 ---> 6 0.5 feet ^ 3 ---> x Clearing x we have: x = (0.5 / 1.5) * (6) = 2 $ Answer: it will cost Sara 2 $ to completely fill her planter with soil