a rectangular solid that is 6cm by 6cm by 6cm is painted on all six faces. then the solid is cut into cubes that measure 2cm on
each side . how many cubes have only one face painted ?
1 answer:
Answer:
6 cubes.
Step-by-step explanation:
By looking at the picture attached we find that the only cubes that will have only once face painted are the ones located in the middle. The cubes near to the edge will have at least two faces painted.
Given that a cube has 6 faces, we can conclude that only 6 small cubes will have one face painted.
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Answer:
9 bags
Step-by-step explanation:
First we will need to calculate the area of their entire backyard, which has a shape of trapezium.
So the formula for the area of a trapezium is
a and b are the lenghts of the parallel sides and h is the height.
From the picture
Then we plug into our formula
square feet
To get the number of bags required we just simply divide the aree of their entire yard by the space that 1 bag covers. We get:
bags
This is more than 8 bags so they will need 9 bags to cover their entire yard.
