What is the total surface area of the pyramid?

3. 255.6 square centimeters

Step-by-step explanation:

To find the total surface area of a pyramid, we need to find the surface area of the 4 sides plus the base. Note that there are also two different types of sides for the 4 sides where one is bigger than the other.

Smaller sides = 2 × × 6 × 12.6

                     = 75.6

Bigger sides = 2 × × 10 × 12

                   = 120

Base = 10 × 6

        = 60

Total surface area = 75.6 + 120 + 60

                              = 255.6

0.84 dang lotta people are looking for this lol or if you round up its 1 but the overall answer to that is 0.84

step-by-step explanation:

d, x=8

step-by-step explanation:

simplifying

4x + -5 = 2x + 11

reorder the terms:

-5 + 4x = 2x + 11

reorder the terms:

-5 + 4x = 11 + 2x

solving

-5 + 4x = 11 + 2x

solving for variable 'x'.

move all terms containing x to the left, all other terms to the right.

add '-2x' to each side of the equation.

-5 + 4x + -2x = 11 + 2x + -2x

combine like terms: 4x + -2x = 2x

-5 + 2x = 11 + 2x + -2x

combine like terms: 2x + -2x = 0

-5 + 2x = 11 + 0

-5 + 2x = 11

add '5' to each side of the equation.

-5 + 5 + 2x = 11 + 5

combine like terms: -5 + 5 = 0

0 + 2x = 11 + 5

2x = 11 + 5

combine like terms: 11 + 5 = 16

2x = 16

divide each side by '2'.