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ki77a [65]
2 years ago
9

i need to find thr surface area for this

Mathematics
1 answer:
mash [69]2 years ago
6 0

Answer:

  96 cm²

Step-by-step explanation:

The surface area of a pyramid is the sum of the base area and the area of the four triangular faces. Using the formulas for each of these, a simplified formula can be written.

  A = s(s +2h)

where s is the side length of the square base, and h is the slant height of a triangular face.

__

For the given dimensions, s=4 cm, h=10 cm, the surface area is ...

  A = (4 cm)(4 cm +2×10 cm) = (4)(24) cm²

  A = 96 cm²

The surface area of the pyramid is 96 square centimeters.

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18 is 2% of what number?
Elis [28]

Answer:

The answer is 900

Step-by-step explanation:

Hope this helps : )

4 0
3 years ago
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Sally is building a fence. She needs 234 inches of fencing material. How many yards of fencing material does she need?
Brums [2.3K]

Answer:

6.5 yards

Step-by-step explanation:

1 yard = 36 inches

234/36 = 6.5

7 0
2 years ago
Which of the following represents the zeros of f(x) = x3 − 11x2 + 38x − 40?
Delvig [45]
The answer is <span>5, 4, 2
</span>
Among all choices we have 5, so
x = 5
x - 5 = 0
Let's divide the expression by (x - 5) using the long division:
                          x³ - 11x² + 38x - 40
(x - 5)  * x² =      x³ - 5x²                   Subtract
____________________________
                              -6x² + 38x - 40
   (x - 5) * (-6x) =    -6x² + 30x          Subtract
____________________________
                                           8x - 40
                    (x - 5) * 8 =     8x - 40   Sutract
____________________________
                                              0

Thus: x³ - 11x² + 38x - 40 = (x - 5)(x² - 6x + 8)

Now, let's simplify x² - 6x + 8.

x² - 6x + 8 = x² - 2x - 4x + 8 =
                  = x² - 2*x - (4*x - 4*2) = 
                  = x(x - 2) - 4(x - 2) =
                  = (x - 4)(x - 2)

Hence:
x³ - 11x² + 38x - 40 = (x - 5)(x - 4)(x - 2)
To calculate zero:
x³ - 11x² + 38x - 40 = 0
(x - 5)(x - 4)(x - 2) = 0
x - 5 = 0            or             x - 4 = 0              or      x - 2 = 0
x = 5                 or              x = 4                   or      x = 2
3 0
3 years ago
Pls hurry will give brainlyest or whatever !!!
Fiesta28 [93]

Answer:

The answer is 3

Step-by-step explanation:

The answer is 3 because x= 15/5 = 3

6 0
3 years ago
What is 4/10 times 8/10???​
pshichka [43]

Answer:

8/25

Step-by-step explanation:

We do this by multiplying the top first, and we get 32.

We then multiply the bottom, and get 100.

You might think the answer is 32/100.

Well, kind of! We need to simplify!

we divide the top and bottom by four to get our answer, 8/25.

3 0
3 years ago
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