Answer:
261 cm²
Step-by-step explanation:
To find the surface area of a square pyramid, you must first recognize all of the shapes.
There are four triangles and one square.
- To find the area of a square, multiply the side by itself twice.
- To find the area of a triangle, multiply the base and the height, then multiply the product by 1/2.
The triangles have a base of 9 and a height of 10.

Multiply the product by 1/2.

There are four triangles.

The area of all three triangles is 180 centimeters; the area of a single triangle is 45 centimeters.
There square has sides of 9 centimeters.

The area of the square is 81 centimeters.
Lastly, we add the areas of the shapes.

Therefore, the surface area of this square prism is 261 cm².
You can use this layout to find the surface area of a square pyramid.
Answer: 
Step-by-step explanation:
- The equation of the line in the slope intercept form is: 
Where m is the slope and b is the y-intercept of the line
- Let's choose two points of the line: (8,-1) and (-4,-4).
- You must calculate the slope of the line as following:

- As you can see in the graph attached, the line intersects the y-axis at -3, then b=-3.
- Substituting values into the equation of the line, you obtain:

The answer is 78
Explanation:
65 / 5 = 13
(13 = 1/6)
13*6 = 78
Ur outlier is 21
mean is : 5
deviation is 2.6
so ur answer is : 2nd one
3x+3=90
subtract 3 from both sides
3x=87
divide both sides by 3
x=29
To find IJ, plug in the x value
x+8+x-9
29+8+29-9
57=IJ