- #1
philipp2020
- 34
- 0
hi
today i have another problem where i am not sure
Here is the question:
A cuboid, made of an square ground and which is open on the top should have the volume of 2 squaremeters. The costs for the material of the 4 sides have the double price as for the material of the square ground. Search for the cuboid with the lowest cost...
So I formed 2 equations for this problem:
1: V = x^2 * h -----> 2 = x^2 * h --->
2: 2 x^2 = 4 * x* h ------> h = 1/2 x
At the end I received a result for a length of 2 meter for square side's bottom and a hight of 0.5 meter. The result seems to be right. But I don't know if the way I solved it afterwards is right or not.
Can somebody show me the right forms for the way to the result?
Thanks very much
Philipp
today i have another problem where i am not sure
Here is the question:
A cuboid, made of an square ground and which is open on the top should have the volume of 2 squaremeters. The costs for the material of the 4 sides have the double price as for the material of the square ground. Search for the cuboid with the lowest cost...
So I formed 2 equations for this problem:
1: V = x^2 * h -----> 2 = x^2 * h --->
2: 2 x^2 = 4 * x* h ------> h = 1/2 x
At the end I received a result for a length of 2 meter for square side's bottom and a hight of 0.5 meter. The result seems to be right. But I don't know if the way I solved it afterwards is right or not.
Can somebody show me the right forms for the way to the result?
Thanks very much
Philipp