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
Pie
3 years ago
10

This is a pyramid problem so please help out

Mathematics
2 answers:
vampirchik [111]3 years ago
8 0

Answer:

Step-by-step explanation:

LA = 5x(1/2)x(12)xsqrt(8.26^2+20^2)

= 649.16

SA = LA + 5x(1/2)x12x8.26

= 896.96

V = 5x1/2x12x8.26x20/3

= 1652

Degger [83]3 years ago
4 0

Answer:

Step-by-step explanation:

LA, Laterial Surface Area, is the lateral surface area of a pyramid. In this case, it is the sum of five triangles with base of 12cm and height that can be calculated as follow:

height^2 = 8.26^2 + 20^2 = 468.23

height = 21.64cm

LA = 5*1/2*12*21.64

= 649.2cm^2

SA, Surface Area, is the sum of LA and base area.

Base area = 5*1/2*12*8.26 = 247.8cm^2

SA = 649.2 + 247.8 =897cm^2

Volume, V = 1/3 * base area * height

= 1/3 * 247.8 * 20

= 1652cm^3

You might be interested in
ive been stuck on this question for a while :( i was absent for the first half of this lesson so i dont completely know what im
Deffense [45]

Answer:

(0, 9 ) and (- 4, 1 )

Step-by-step explanation:

To determine which ordered pairs lie on the graph substitute the x- coordinate of the point into the right side of the equation and compare the value obtained with the y- coordinate

(- 20, - 49 )

2x + 9 = (2 × - 20) + 9 = - 40 + 9 = - 31 ≠ - 49

(1, 10 )

2x + 9 = (2 × 1) + 9 = 2 + 9 = 11 ≠ 10

(0, 9 )

2x + 9 = (2 × 0) + 9 = 0 + 9 = 9 ← point lies on graph

(- 4, 1 )

2x + 9 = (2 × - 4) + 9 = - 8 + 9 = 1 ← point lies on graph

(- 3, 40 )

2x + 9 = ( 2 × - 3) + 9 = - 6 + 9 = 3 ≠ 40

5 0
3 years ago
Given that 2x-7y=30
lidiya [134]

Answer:

y = - \frac{24}{7}

Step-by-step explanation:

Substitute x = - 3 into the expression

2x - 7y = 30

2(- 3) - 7y = 30

- 6 - 7y = 30 ( add 6 to both sides )

- 7y = 36 ( divide both sides by - 7 )

y = \frac{36}{-7} = - \frac{36}{7}

4 0
3 years ago
Midpoint segment (-1,5) (-6,-2)
rodikova [14]

Answer:

the answer is €74£ and if you dont get dats juss u get it together

3 0
3 years ago
At a particular music store, CDs are on sale at $12.00 for the first one purchased and $9.00 for each additional disc purchased.
ddd [48]
D. 9 CD's...................
5 0
3 years ago
Read 2 more answers
If ten birds are eating 100 worm how many would they have left
gogolik [260]

Answer:

its hard to tell. you cant really know how much they will eat.

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • Rewrite the expression with the given base.<br><br> 125^2x with a base of 5
    12·2 answers
  • A store donated cases of crayons to a day care center. Each case holds 24 boxes of crayons; each box holds 8 crayons. How many c
    7·1 answer
  • Write -1/19, 7/4, -4/7 from least to greatest
    7·1 answer
  • Someone please help me out with this algebra question 100% correct only
    7·1 answer
  • From the set {36, 16, 13}, use substitution to determine which value of x makes the equation true. 3x = 39
    8·2 answers
  • So who said i was not good at math???? me i did lol
    14·2 answers
  • Gareth 30 students in a class and the ratio of boys to girls in the class is 2:3 calculate the number of goals
    12·1 answer
  • IM PUTTING THIS FOR 30 POINTS PLEASE ANSWER
    5·1 answer
  • If x​=68 find the measures of angles​ 1, 2, and 3.
    6·2 answers
  • Order the following from least to greatest: |5|, -4, -|9|, -(-1), |-10|, -2.72
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!