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
natulia [17]
3 years ago
8

An equilateral triangle has a side length of 16 cm work out the area of the triangle.

Mathematics
2 answers:
bonufazy [111]3 years ago
4 0

Answer:

128cm²

Step-by-step explanation:

A=½×b×h

A=½×16cm×16cm

A=½×256cm²

A=128cm²

uysha [10]3 years ago
4 0

Answer:

110.9 cm²

Step-by-step explanation:

The area (A) of an equilateral triangle is calculated as

A = \frac{s^2\sqrt{3} }{4}  ( s is the side length )

Here s = 16, thus

A = \frac{16^2\sqrt{3} }{4}

   = \frac{256\sqrt{3} }{4} = 64\sqrt{3} ≈ 110.9 cm² ( to 1 dec. place )

You might be interested in
Classify the following triangle. Check all that apply
lawyer [7]
It is a right, isosceles triangle.
5 0
3 years ago
Read 2 more answers
If y varies directly as x and y=15 when x =5, what is the value of y when x = 15?​
yulyashka [42]
Y=5 just flip the question sort of
7 0
2 years ago
jordan solved 6 × 5 by breaking apart the 6 into 5 + 1. which of the following correctly shows the next step to find the solutio
AleksandrR [38]
D, it’s the only answer that equals 30. When splitting up the 6, you’re doing the distributive property, which is what D is doing.
7 0
3 years ago
Read 2 more answers
An urn contains 5 red, 6 blue, and 8 green balls. If a set of 3 balls is randomly selected, what is the probability that each of
monitta

Answer:

As a fraction, the answer is exactly 86/969

In decimal form, the answer is approximately 0.08875

=====================================================

Work Shown:

The assumption is that no replacements are made for each selection.

5 red, 6 blue, 8 green

5+6+8 = 19 total

A = P(3 red) = (5/19)*(4/18)*(3/17) = 10/969

B = P(3 blue) = (6/19)*(5/18)*(4/17) = 20/969

C = P(3 green) = (8/19)*(7/18)*(6/17) = 56/969

D = P(3 all same color)

D = A+B+C

D = 10/969 + 20/969 + 56/969

D = (10+20+56)/969

D = 86/969

D = 0.08875

6 0
3 years ago
24 is 31.25% of what number? Prove your answer in the show your workbox.
FinnZ [79.3K]

Answer:

76.8

Step-by-step explanation:

1. We assume, that the number 31.25 is 100% - because it's the output value of the task.

2. We assume, that x is the value we are looking for.

3. If 100% equals 31.25, so we can write it down as 100%=31.25.

4. We know, that x% equals 24 of the output value, so we can write it down as x%=24.

5. Now we have two simple equations:

1) 100%=31.25

2) x%=24

where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:

100%/x%=31.25/24

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 24 is what percent of 31.25

100%/x%=31.25/24

(100/x)*x=(31.25/24)*x       - we multiply both sides of the equation by x

100=1.3020833333333*x       - we divide both sides of the equation by (1.3020833333333) to get x

100/1.3020833333333=x

76.8=x

x=76.8

now we have:

24 is 76.8% of 31.25

6 0
3 years ago
Read 2 more answers
Other questions:
  • If a line intersects two sides of a triangle, then it forms a triangle that is similar to the given triangle. always sometimes n
    14·2 answers
  • When Joey dives off a diving board, the equation of his pathway can be modeled by h = -16t2 + 15t + 12. A) Find Joey's maximum h
    9·1 answer
  • Help me with this Promble
    5·1 answer
  • An industrial cleaner is manufactured using only the 3 secret ingredients A, B, and C, which are mixed in the ratio of 2:3:5, re
    8·2 answers
  • Shanda says that 393 is rational. Allison and Franklin disagree with her. Allison says 393 is an integer while franklin says its
    9·1 answer
  • What is the value of the x-coordinate of point W? Enter your answer as a decimal to the nearest o.5.
    7·1 answer
  • Find the value of x and y​
    13·1 answer
  • Which number can not be used to write related number sentences? explain. 5 7 9 14
    10·1 answer
  • Need help please<br>thxs​
    7·1 answer
  • Ali bought 212 pounds of ground turkey at $2.50 per pound and ​ 314 ​pounds of ground beef at $3.20 per pound.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!