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
WITCHER [35]
2 years ago
10

Surface area and volume of a regular triangular pyramid that has a base edge of 16 cm and a slant height of 15 cm

Mathematics
1 answer:
Schach [20]2 years ago
8 0

Answer:

a) Surface area = 616 cm²

b) Volume = V = 1083 cm³

Step-by-step explanation:

Surface area and volume of a regular triangular pyramid that has a base edge of 16 cm and a slant height of 15 cm

a) Formula for surface area = Base area × 1/2(perimeter × slant height)

Base area = Base edge²

=( 16 cm)² = 256 cm²

Perimeter = Base edge × 3

= 16 cm × 3 = 48 cm

Hence:

Surface Area = 256 cm² + 1/2(48 × 15)

= 256 cm² + 360 cm²

= 616 cm²

b) Volume = 1/3 × Base area × Height

1082.758616785cm³

Approximately = 1083 cm³

You might be interested in
How do I work this out oof
kakasveta [241]

I am so sorry for giving you the wrong answer at first.

Here's the processs

1x=-0.5555

Move the decimal point in the repeating decimal one space forward

10x=-5.55555

Then subtract

10x=5.5555

x=-0.5555= 9x=-5

Divide both sides by 9

9x=-5

9x/9=-5/9

-5/9 is your final answer!

Hope this helps!

7 0
3 years ago
Read 2 more answers
PLEASE EXPLAIN YOUR REASONING!!
xxTIMURxx [149]

Answer:

$120.00

Step-by-step explanation:

2000/100 = $20 = 1%

20x12 = $240 = annual intrest = 12m

June 15 - December 15 = 6m

240/2 = $120 for half a year intrest!

3 0
3 years ago
A few probability questions. Quickly please :) I have tried to do them but seem to be unable to figure these 2 out.
Zepler [3.9K]
1.choosing a red marble since the probability would be 7/12 but the blue would be 5/12 so red is most possible
2.the possibility of a red being chosen is 2/20=1/10
4 0
3 years ago
Which of the following could be used to describe angles DBC and ABD?
Gnoma [55]
The answer is C :)))
3 0
2 years ago
Look at the image to answer.​
Vsevolod [243]
No solution is the answer
4 0
3 years ago
Read 2 more answers
Other questions:
  • one-third of a number x is equal to 22 less than the number. Write and solve an equation to find the number.
    11·1 answer
  • Help, Please!
    13·1 answer
  • I need help with 50. I don't know how to figure it out
    12·1 answer
  • Which list shows all the factors of 36?
    9·2 answers
  • What is 252 = 11n + 10
    9·2 answers
  • 11,13,15,17 I need help with
    6·2 answers
  • If tan²A = 1+ 2tan²B<br>Show: COS2B = 1+2 cos2A​
    10·1 answer
  • Pls help me solve pls show how you got the answer
    8·2 answers
  • Here is the proof of sinx+cos^2x/cosx=tanx+cosx. What is the missing line?
    11·1 answer
  • Kayla can write 415 pages in 10 minutes. At this rate, how many pages could Kayla write in 30 minutes?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!