15 inches.
The side length of the base is 4. Find the surface area of the base only by squaring the side length - 4² - which is 16. The surface area of the base is 16 in².
The surface area of the entire pyramid can be found using this equation:
Where:
- SA is the surface area (136 square inches)
- B is the area of the base (16 square inches)
- n is the number of triangles (4, because it's a square pyramid)
- b is the base length (4 inches)
- l is the slant length
Note that we have many parts of this equation, and all we need is the slant length. So, let's format the equation with what we have:

So then we want to solve for l, the slant height. So, start by subtracting 16 from each side. This would give us:

Now, multiply both sides by 2 to get rid of the fraction:

Finally, divide both sides by four, twice (divide by 16):

So, we know that the slant height of this pyramid is 15 inches.
A line or a point with no thickness
The slope is 4 and the y-intercept is 
Step-by-step explanation:
The general form of a linear equation is Ax + By + C = 0, where
- A is the coefficient of x
- B is the coefficient of y
- C is the numerical term
- A, B, and C are integers
- The slope of the line =

- The y-intercept =

∵ The linear equation is 0 = 2 - 3y + 12x
- Switch the two sides and arrange the terms as the general
form above
∴ 12x - 3y + 3 = 0
∴ A = 12
∴ B = -3
∴ C = 2
∵ The slope of the line = 
- Substitute A by 12 and B by -3
∴ The slope of the line = 
∴ The slope of the line = 4
∵ The y-intercept = 
- Substitute C by 2 and B by -3
∴ The y-intercept = 
∴ The y-intercept = 
The slope is 4 and the y-intercept is 
Learn more:
You can learn more about the linear equation in brainly.com/question/4819659
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