1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
DochEvi [55]
3 years ago
8

A square pyramid has a base with an area of 20 square meters, and its lateral faces have a slant height of x meters. Sydney is c

onstructing a second square pyramid with the same size base, but the lateral faces of her pyramid have a slant height twice as long, 2x. Which statement best describes how the surface area of Sydney’s pyramid compares to the surface area of the original pyramid?

Mathematics
2 answers:
Lady bird [3.3K]3 years ago
6 0

Answer:

The answer is D, "Sydney's pyramid will have a surface area that is greater than the original pyramid's but not double the area because the slant height is not used when finding the area of the base." (Just took the test)

Step-by-step explanation:


svetoff [14.1K]3 years ago
5 0
1. Consider the pyramid ABCDE in the figure 1 attached:

Each side of the square base equals \sqrt{20} = \sqrt{4*5} = \sqrt{4}* \sqrt{5}=2 \sqrt{5} (units)

Area of 1 lateral side of pyramid ABCDE is \frac{1}{2}* 2 \sqrt{5}*x=\sqrt{5}x

so the total lateral area is 4\sqrt{5}x (units squared)

and the total surface area is 20+4\sqrt{5}x (units squared)

2. Now consider the second figure KLMNP, Sydney's pyramid:

The lateral area is 4* \frac{1}{2}* 4 \sqrt{5} *2x=16 \sqrt{5}x

so the total area of the second pyramid is 20+16 \sqrt{5}x

So 2 things can be said about the areas:

i) the lateral area of Sydney's pyramid is \frac{16 \sqrt{5}x}{4\sqrt{5}x} =4 times larger than the lateral area of the original pyramid.

ii) The total area of Sydney's pyramid is (20+16 \sqrt{5}x)-(20+4\sqrt{5}x)=12\sqrt{5}x units squared larger than the total area of the original pyramid.

You might be interested in
-2w + 20= -17 -17 +4w
mixas84 [53]

-2w + 20 = -17 - 17 + 4w

Combine like terms on the right side of the equation.

-2w + 20 = -34 + 4w

Add 2w to both sides.

20 = -34 + 6w

Add 34 to both sides.

54 = 6w

Divide both sides by 6.

w = 9 is your answer.

4 0
3 years ago
Please help me also explain your answer so I can get better at this thank you :)
Elina [12.6K]
Answer: 880

Explanation: 132/0.15 = 880 sry it wasnt thorough explanation i dont have time
6 0
2 years ago
Read 2 more answers
1.
LenKa [72]
The answer would be C because they say if 3 new students arrived each year.
4 0
3 years ago
Write an equation for line N
Annette [7]

Answer:

y=x-1

Step-by-step explanation:

6 0
2 years ago
You roll a six sided die what is the probability of rolling a 4 or an odd number
12345 [234]

Answer:

we need an out of sorry -_-

5 0
3 years ago
Read 2 more answers
Other questions:
  • Martene got a small aquarium for her birthday. the aquarium is a right rectangular prism 18.5cm long by 15cm wide. martene put 3
    7·2 answers
  • Which statement about the graphs of f(x)=4x+2 and g(x)=8x+4 is correct?
    15·2 answers
  • Which arrangement for these fractions is in increasing order 3/5, 5/9, 4/7?
    5·2 answers
  • Kimberly drives at a rate of 50 miles per hour on her trip across the country. If it takes Kimberly 200 gallons of gasoline to d
    5·1 answer
  • A - 2 + 3 = -2<br> Help me pls
    5·2 answers
  • 2.(08.01 MC)
    10·1 answer
  • Hey&lt;3 If you help you’re amazing if you don’t you’re awesome.
    9·1 answer
  • PLS ANSWER AND I WILL MARK AS BRAINLIST
    6·2 answers
  • Table 2 is Proportional because when I cross multiply 2 times 3 and 1 times 6, I get 6. The products are the same
    14·1 answer
  • A six -sided die is rolled 330 find five comes up 53 times. what is the theoretical probability of rolling a five
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!