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iren [92.7K]
3 years ago
11

Which expression represents the total surface area, in square centimeters, of the square pyramid?

Mathematics
2 answers:
Anit [1.1K]3 years ago
5 0

Answer:

Total area = (8.2)(8.2) + 4[1/2(8.2) (10.3)]

Step-by-step explanation:

From figure we can see a square pyramid with base edge 8.2 and slant height 10.3

Points to remember

Total area of square pyramid = Base area + Lateral face area

Lateral face area = 4 * One face area

<u>To find the lateral face area</u>

The face is like a triangle with base 8.2 and slant height = 10.3

Area of triangle = bh/2

Face area = 1/2(8.2) (10.3)

Lateral surface area = 4[1/2(8.2) (10.3)]

To find the base are

Base is a square with base edge = 8.2

Base area = side * side = (8.2)(8.2)

<u>To find the total area of pyramid</u>

Total area = Base area + Lateral face area

Total area = (8.2)(8.2) + 4[1/2(8.2) (10.3)]

Therefore the correct answer is first option

elena-14-01-66 [18.8K]3 years ago
4 0

Answer:

(8.2)(8.2) + 4[1/2(8.2) (10.3)]

Step-by-step explanation:

a. i tooke

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John drove from house to work at an average speed of 30 mph, trip took 40 minutes. How far in meters is his house to work?
AysviL [449]

Answer:

20 meters

Step-by-step explanation:

Firstly we need to know that distance = speed * time

In this particular question, we have the time and the speed, we are only told to find the distance.

Now as we can see, the units are not consistent. While the average speed is 30mph, the time is not in hours but minutes. So practically, we have to convert the time to hours.

Since there are 60 minutes in an hour, the number of hours in 40 minutes would be 40/60 = 2/3 hours.

Now we can proceed to find the distance. We simply multiply the average speed with the time.

Hence, that is 30 * 2/3 = 20 meters

5 0
3 years ago
Which ratios are equal to 64 when the scale factor is 8? Select all that apply.
Luden [163]

Answer:

The scaled surface area of a square pyramid to the original surface area.

The scaled area of a triangle to the original area.

Step-by-step explanation:

Suppose that we have a cube with sidelength M.

if we rescale this measure with a scale factor 8, we get 8*M

Now, if previously the area of one side was of order M^2, with the rescaled measure the area will be something like (8*M)^2 = 64*M^2

This means that the ratio of the surfaces/areas will be 64.

(and will be the same for a pyramid, a rectangle, etc)

Then the correct options will be the ones related to surfaces, that are:

The scaled surface area of a square pyramid to the original surface area.

The scaled area of a triangle to the original area.

5 0
3 years ago
Pls help!!!! Rewrite the expression. <br> 4+4+5x2x5+(3+3+3)x6x6+2+2
Paha777 [63]

Answer:

386

Step-by-step explanation:

4+4+5x2x5+(3+3+3)x6x6+2+2

=4+4+5x2x5+9x6x6+2+2

=4+4+50+324+2+2

=386

8 0
3 years ago
Write 4 hundred 16 tens 5 ones in standard form
In-s [12.5K]
565 is the correct answer
6 0
3 years ago
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In a flower garden, there are 3 tulips for every 8 daisies. If there are 18 tulips, how many daisies are there?
LenaWriter [7]
18/3 = 6
So 8*6 = 48
There will be 48 daisies
6 0
3 years ago
Read 2 more answers
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