The middle section is n(n+1)
The top row is n+2
The bottom row is 2n+1
So the rule for the total number of tiles will be the sum of the above rules...
s(n)=n(n+1)+n+2+2n+1
s(n)=n^2+n+n+2+2n+1
s(n)=n^2+4n+3
<span>A solid that has faces which consist of two squares and four congruent rectangles is called a rectangular prism. It </span><span>has six faces that are rectangles. It has the same cross-section along a length, which makes it a </span>prism<span>. It is also a "cuboid". Hope this answers the question.</span>
Answer:
you multiply
Step-by-step explanation: itss easy just multiply it
This question has this set of answer choices:
a) when the plane cuts three faces of the cube, separating one corner from the others
b) when the plane passes through a pair of vertices that do not share a common face
c) when the plane is perpendicular to the base and intersects two adjacent vertical faces
d) when the plane makes an acute angle to the base and intersects three vertical faces
e) not enough information to answer the question
The right answer is the first choice: a) when the plane cuts three faces of the cube, separating one corner from the others
You can see a picture of this case in the figure attached: as you can see the cross section (in pink) is a triangle.
30,77,55,71,19,40,10,5,7,6