Could somebody solve this with a explanation

608cm^2

Step-by-step explanation:

So, the surface area of any shape is the area of each and every shape added together.

So, for this you'll be using the area formulas for triangles and for squares.

(Area of a triangle, Area of a square )

Instead of adding (in my opinion) it's easier to multiply if you have two shapes of the same dimensions* (*if they don't have the same dimensions, you have to add. You can't multiply them because they aren't the same).

Fortunately, the two triangles are the same and the boxes on the top and bottom are the same as well.

So, the final surface area equation is going to look like this:

<- the subscripts on the lw's are to distinguish that one pair is specific to one set of numbers while the other is specific to another pair. they aren't necessary, really you could just skip this and plug in values.

* by the way, on the first step, the 2 in        

                                                                front of the 1/2 cancels it out so I

                                                                did that without showing.

608 is your answer.

i can answer this question sweetie!

step-by-step explanation:

d. $180

step-by-step explanation:

if the dimensions of the room is 9ft by 12 ft, we have the area of the floor as,

so the area of the floor is 108 square feet, converting that into square yards we get,

the cost of carpet is $15 per square yard, therefore the cost of carpet for 12 square yards is,

hence, the cost of carpet is $180.

assuming the dimensions of the room be,

15 ft by 12 ft

so, the area of the floor of that room is,

we can convert 180 square feet into square yards, we know that,

1 sq ft = 0.111 sq yard

so, 180 square feet is,

so the area of floor is 20 square yards.

now, the cost of carpet is 15 dollars per square yard, therefore the cost of carpet for 20 square yards is,

so, it will cost $300.