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
zhuklara [117]
2 years ago
8

Find the surface area of the pyramid.

Mathematics
1 answer:
Mashutka [201]2 years ago
7 0

Answer:

319

Step-by-step explanation:

So, to find the surface area, first we find the base area, which is: 11 x 11 = 121

Then, we have to find the area of the other faces. Since each face is a triangle, we can use the formula A = 1/2 x b x h.

So,

b = 11

h = 9

1/2 x 11 x 9 = 49.5

The, we multiply by 4, the number of sides: 49.5 x 4 = 198

Then, we add the 2, values: 121 + 198,

Which gives us: 319.

Hope this helped!

You might be interested in
Can someone help me with this question, again?
givi [52]
A. 4*1 - 3*2 = 4 - 6 = -2 (X
B. 4*4 - 3*2 = 16 - 6 = 10 (O
C. 4*7 - 3*6 = 28 - 18 = 10 (O
D. 4*4 - 3*(-3) = 16 + 9 = 25 (X

so the answers are B and C
7 0
3 years ago
-5
Elanso [62]
The correct answer would be:
-5
-4
-3
-2
-1
0
1
2
3
4
5
8 0
3 years ago
How do you turn f(x) = 3x 2– 40x + 180 into a graph?
Nuetrik [128]

Answer:

Intersept is (4.55,0)

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Sin46=8/x 20 POINTS need asap
hodyreva [135]

Answer:

x = 11.12130872

Step-by-step explanation:

if this isnt right then let me know

6 0
3 years ago
On a recent trip to the convenience store, you picked up 4 gallons of milk, 6 bottles of water and 5 snack size bags of chips. Y
cricket20 [7]

Answer:

Cost of a snack size bag of chips = $0.8

Cost of a water bottle = $1.6

Cost of a gallon of milk = $3.4

Step-by-step explanation:

Let the cost of water bottle = $a

Cost of 1 gallon milk = $b

and cost of 1 bag of chips = $c

So, cost of 4 gallons of milk, 6 bottles of water and 5 bags of chips = $(4b + 6a + 5c)

4b + 6a + 5c = 27.2 -----(1)

Cost of one water bottle = 2 × cost of one bag of chips

a = 2c -----(2)

A gallon of milk = cost of water bottle + $1.80

b = a + 1.8

From equation (2)

b = 2c + 1.8 -----(3)

Now we substitute these values from equations (2) and (3) in equation (1)

4(2c + 1.8) + 6(2c) + 5c = 27.2

8c + 7.2 + 12c + 5c = 27.2

25c = 27.2 - 7.2

c = \frac{20}{25}

c = $0.8

From equation (2)

a = 2×0.8

a = $1.6

From equation (3)

b = 2(0.8) + 1.8

b = 1.6 + 1.8

b = $3.4

Therefore, cost of a snack size bag of chips = $0.8

Cost of a water bottle = $1.6

Cost of a gallon of milk = $3.4

5 0
3 years ago
Other questions:
  • Which symbol makes this statement true?<br><br> 7.1 _____ -7.1<br><br> &gt;<br> &lt;<br> =
    9·1 answer
  • What is 10,504,006 in word form and in exapnded form
    15·2 answers
  • How can i plus and subtract fractions
    11·1 answer
  • Can anyone help???????
    12·1 answer
  • Solve by completing the square:<br> x^2 + 7x + 4 = 0
    12·1 answer
  • which one of following statement expresses a true proportion 3:4=9:12 b. 2:1=1:2 c. 7:9=8:9 d. 54:9=6:3
    8·1 answer
  • PLEASE HELP ITS DUE IN 7 MINUTES!​
    12·1 answer
  • ALGEBRA D1
    5·2 answers
  • Reduce the ratio to its lowest form.<br> 42 : 49
    5·1 answer
  • Help please, i have absolutely no idea how to do this :(
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!