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
qwelly [4]
3 years ago
7

An equilateral triangle with side length 4cm is shown in the diagram, work out the area of the triangle.

Mathematics
2 answers:
Elan Coil [88]3 years ago
8 0

Answer:

4√3cm^2

Step-by-step explanation:

we know that the area of equilateral triangle is √3/4a^2

dexar [7]3 years ago
6 0

Answer:

8cm²

Step by step explanation:

A= ½×4cm×4cm

A= ½×16cm²

A= 8cm²

You might be interested in
In the equation 3s +135= 4.5 (s +10) what is s
Lubov Fominskaja [6]
3s + 135 = 4.5s + 45

Now move the variables and coefficients

135 = 1.5s + 45

And then the numbers

90 = 1.5s

Simplify

90/1.5 = 1.5s/1.5

60 = s

Hope this helps!
6 0
2 years ago
The base of a solid in the first quadrant of the xy plane is a right triangle bounded by the coordinate axes and the line x + y
Ivahew [28]

The area of an equilateral triangle of side "s" is s^2*sqrt(3)/4. So the volume of the slices in your problem is 

(x - x^2)^2 * sqrt(3)/4. 

Integrating from x = 0 to x = 1, we have 

[(1/3)x^3 - (1/2)x^4 + (1/5)x^5]*sqrt(3)/4 

= (1/30)*sqrt(3)/4 = sqrt(3)/120 = about 0.0144. 

Since this seems quite small, it makes sense to ask what the base area might be...integral from 0 to 1 of (x - x^2) dx = (1/2) - (1/3) = 1/6. Yes, OK, the max height of the triangles occurs where x - x^2 = 1/4, and most of the triangles are quite a bit shorter...

8 0
4 years ago
Alexandria purchased a computer on sale. The original price was $1200. The sale price was 5/6 of the original price. how much di
Vaselesa [24]
I believe you ment to say sale price but I hope this helps you understand your question. The original price was 1200, and if it were 5/6 on sale (this method works for all questions like this) you would do 1200 ÷ 6 = 200 x 5 = $1000.
7 0
3 years ago
I need help with question 7 <br><br> Find IK
Papessa [141]

Answer:

A. 46

Step-by-step explanation:

because IJ is 46 also and there both the same size.

5 0
3 years ago
What's the better buy: A) 5lb. bag of potatoes for $3.79 or a 2lb. bag<br> for $1.50?
Tcecarenko [31]

Answer:

A 2lb. bag because 1.50 x 2 = 3.00$ plus the extra 1 lb which is 75c = 3.75 $

Step-by-step explanation:

Could i have branliest and heart please

8 0
3 years ago
Other questions:
  • Use ΔABC below to answer the question that follows:
    15·2 answers
  • Jamie is a salesperson in a shoe store and earns $95 per week, plus 20% of her weekly sales. If Jamie makes $475 in one week, wh
    10·1 answer
  • I need help I’ve tried all day
    12·1 answer
  • 87g of sugar is needed to make 10 cakes. How much sugar is needed for 7 cakes?
    5·2 answers
  • Hey can you please help me posted picture of question
    12·1 answer
  • What is the total area of a right rectangular prism with a height of 8 feet, a width of 10 feet, and a thickness of 12 feet?
    6·2 answers
  • Deon bought a desktop computer and a laptop computer. Before finance charges, the laptop cost $250 less than the desktop. He pai
    13·1 answer
  • What is the congruence correspondence, if any, that will not prove the given triangles congruent?
    7·1 answer
  • The ratio of the measures of the three angles of a triangle is 6:9: 10.<br> Find the angle measures.
    14·1 answer
  • The line AB is shown on the grid.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!