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pishuonlain [190]
2 years ago
15

Hhhhhhheeeellllpppp mmmmmeeeeee

Mathematics
1 answer:
lora16 [44]2 years ago
7 0
Hey there! I’m happy to help!

The surface area is basically the area of the surface of the shape. So, if you have a cube, it’s the area of all of the surface of the cube, not anything inside.

We see that we have a net of this square pyramid. If we fold it up, the square and four triangles will make up the surface of the 3D shape we see. So, we need to find the area of all of these shapes.

SQUARE
To find the area of a square, you multiply one of the sides by itself (all the sides are the same)

10(10)=100

TRIANGLES
To find the area of a triangle, you take the base and multiply the height and then divide it by two.

10(12)=120
120/2=60
Since we have four triangles, we multiply it by four.
60(4)=240

Finally, we add this all up.

240+100=340

Therefore, the answer is 340 square inches.

I hope that this helps! Have a wonderful day!
You might be interested in
What is the value of x so the rectangles have the same area.<br> a. 12 &amp; X<br> b. X-2 &amp; 16
Ilya [14]
The area of a rectangle is <em>L x W</em>. We have to get the value of x first so that we can find the area of the rectangle.

To get the value of x
given:
<span>a. 12 & X
b. X-2 & 16 </span>
solution:
12x (x) = (8-2 ) 16
12x = 16x-32
32 = 16x-- 12x
<u>32 </u> = <u>4x</u>
4        4
8 = x

Checking:

a. 12 & X                                                          b. X-2 & 16
Area of a rectangle = L x W                            Area of a rectangle  = L x W
                                =12 x 8                                                             =  (8-2) 16
Area of a rectangle = 96                                                                  = 6 (16)
                                                                        Area of a rectangle  = 96                             
                                                                    









5 0
3 years ago
I really need help with b and c
Degger [83]

Answer:

Step-by-step explanation:

I dont know which b and c you are talking about, so...

3) b) 8, c) 19

4) b) 10, c) 16

Hope its helps u

Thank You

Please mark as brainliest

4 0
3 years ago
I need to make sure this is correct .. thankyou
balu736 [363]
Yes, I am pretty sure you are correct.
6 0
2 years ago
To make concrete, the ratio of cement to sand is 1 : 3. If cement and sand are sold in bags of equal mass, how many bags of ceme
kotykmax [81]

Answer:

5 bags of cement are required.

Step-by-step explanation:

Since to make concrete, the ratio of cement to sand is 1: 3, if cement and sand are sold in bags of equal mass, to determine how many bags of cement are required to make concrete using 15 bags of sand the following calculation must be done:

Cement = 1

Sand = 3

3 = 15

1 = X

15/3 = X

5 = X

Therefore, 5 bags of cement are required.

3 0
2 years ago
Use the graph of f below. Assume the entire function is graphed below.<br> Find the domain
enot [183]

ANSWER

The domain of the function is

- 3 \leqslant x \leqslant 6

or

[-3,6]

EXPLANATION

The domain of a function refers to the values of x for which the function is defined.

From the graph, we can see that the function begins at (-3,6) and ends at (6,-4).

Therefore the function is defined for x=-3 to x=6.

Hence the domain of the function is

- 3 \leqslant x \leqslant 6

or

[-3,6]

5 0
2 years ago
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