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
oee [108]
3 years ago
8

Regular triangular pyramid has the slant height k=12 cm and lateral area AL = 198 cm2. Find the length of the base edge.

Mathematics
2 answers:
KATRIN_1 [288]3 years ago
6 0
To find this answer you will use the formula for finding the area of the triangle because that shape is a triangle.  

A = 1/2 bh
198 = 1/2 x b x 12
198 = 6b
b = 33 cm

We know the total area and we know the slant height is 12 cm so we substitute these in and solve for h.

The length of the base edge is 33 cm.  You should substitute this back in to check.

1/2 x 33 x 12 = 198 square cm.
NNADVOKAT [17]3 years ago
3 0

Answer:

The Answer is: 11 cm

You might be interested in
If j= 14, find the value of 1/2j.
Yakvenalex [24]

Answer:7

Step-by-step explanation:

1/2 of j is the same as j ÷ 2

14 ÷ 2 = 7

8 0
3 years ago
How do I solve for r
White raven [17]
To solve for R you use PEMDAS
3 0
3 years ago
Read 2 more answers
Which of the following relations is a function?
Serga [27]

Answer:

B

Step-by-step explanation:

A is not a function because the same x value is repeated twice with different y values. The same goes for C and D so the answer is C.

6 0
2 years ago
Read 2 more answers
I need help. what is the slope?<br> (The bottom one says : (-1, -6)
ch4aika [34]

Answer:

I believe it would be -11/4.

8 0
2 years ago
Read 2 more answers
Rose and Dennis each open a savings account at the same time. Rose invests $2,600 in an account yielding 4.1% simple interest, a
vodka [1.7K]
The formula is
A=p (1+rt)
A future value
P present value
R interest rate
T time in years

Rose investment
A=2,600×(1+0.041×9)
A=3,559.4

Dennis investment
A=2,200×(1+0.057×9)
A=3,328.6

So Rose investment is greater than Dennis investment by
3,559.4−3,328.6=230.8

Hope it helps!
3 0
3 years ago
Other questions:
  • Fill in each box with the correct numb<br> 5(X+9)=5. +5.
    11·1 answer
  • a rectangular prism has a volume of 144 cm3. the base is a square with a length of 4 cm. what is the height of the prism
    8·1 answer
  • Find the value of the expression (-8.6) + 7.2
    12·1 answer
  • Find the value of |-4| - 5 · 2(-1 + 3)
    8·2 answers
  • HELP!!!!
    15·1 answer
  • Need Help on Algebra 2 Question To Finish My Unit Exam (10.12)
    11·1 answer
  • How do you do this question?
    14·1 answer
  • Can someone help me with this?!
    6·1 answer
  • Which expressions are equivalent to 2(25)?
    9·2 answers
  • Please help me now help me nowww please
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!