Use the net to compute the surface area of the three-dimensional figure.
1 answer:
You might be interested in
Hey there!
I attached an image to make this a lot easier to understand.
I split up the rectangle into four triangles and one rectangle. We are going to find the area of each one individually then add them together.
Also note that there are two pairs of congruent triangles so they will have the same area.
The top and bottom triangles have heights of 2 and lengths of 5. This means their areas are each 5.
The left and right triangles have heights of 6 and lengths of 3. This means their areas are each 9.
The rectangle has a height of 6 and a length of 2. This means its area is 12.
Now we can add together all the areas of the individual pieces.
5 + 5 + 9 + 9 + 12 = 40
So the area is 40 square units.
Hope this helps!
Answer:
Felicia, these questions are tough for a lot of reasons, so it makes sense to me that nobody is giving you the right answers. here is a right one :)
Step-by-step explanation:
1st we need a strategy. brainstorm :P we are given the cost of material for boxes in area, we are asked how much 12 boxes would cost. let's find the area of the material for one box multiply that by the given cost. and then multiply that by 12 for the total cost. seem good? Yes there are other good ways to solve this problem if you're thinking that. this is just how I'm arbitrarily choosing to solve it.
1) surface area of prism box
1a) triangles on ends
1/2* b*p ( I think 6.2 is P for you, not positive about that)
1/2*6.4*6.2= 19.84
1b) flat sides
6.4*25 =160 ( this is B )
1c) add up the 5 sides
160*3 + 19.84 * 2 = 839.68
2) find the cost on 1 box
839.68 * $0.0001 = 0.8397
about $0.84
3) find the cost for 12 boxes
0.8397 * 12 = 10.076
about $10.08
try those answers :)