Find the area of an equilateral triangle with side length 4.6 cm. Round your answer to 1 DP.

Answers

Answer 1
10.58
The areas of a triangle is b*h / 2
4.6*4.6 = 21.16
21.16/2 = 10.58
This is because it is an equilateral triangle so all side lengths are the same
Answer 2

Answer:

A = 9.2 cm²

Step-by-step explanation:

A = 1/2 bh, you know the base = 4.6 and you need to find the height of the triangle.

Drawn the attitude of the equilateral triangle to the base and use a² + b² = c²

c = side of the triangle = 4.6 , b = 1/2 0f 4.6 = 2.3 . the attitude to the base ÷ the base in half.

a² + (2.3)² = (4.6)²

a² + 5.29 = 21.16

a² = 21.16 - 5.29

a² = 15.87

[tex]a = \sqrt{15.87}[/tex]  

Now we know the height of the triangle = [tex]\sqrt{15.87}[/tex] , the base = 4.6

A = 1/2bh

A = 1/2 (4.6)([tex]\sqrt{15.87}[/tex] )

A  = 9.1625

A = 9.2 cm²    or the A of any equilateral triangle = [tex]\frac{\sqrt{3} }{4} s^2[/tex]

                                              A = [tex]\frac{\sqrt{3} }{4} (4.6)^2[/tex]

                                              A = 9.1625

                                              A = 9.2


Related Questions

A circle has a radius of 10 ft. What is its circumference?
Use 3.14 for Ti, and do not round your answer. Be sure to include the correct unit in your answer.

Answers

Circumference of a circle = pi x diameter

pi = 3.14

diameter = radius x 2
diameter = 10 x 2
diameter = 20

Circumference = 3.14 x 20
Circumference = 62.8 ft

Answer:

62.8 ft

Step-by-step explanation:

Circumference = 2πr

2 * 3.14 * 10 = 62.8

Which has a greater rate of change?
pick one

Answers

I think the yellow line.
It’s the steepest so I has the greatest rate of change.

A file that is 261 megabytes is being downloaded. If the download is 17.1% complete, how many megabytes have been downloaded? Round your answer to the nearest tenth.

Answers

Answer:

44.6 megabytes

Step-by-step explanation:

If 261 megabytes = 100% and we are looking for 17.1% then we can make a cross product.

261= 100

? = 17.1

It means that (17.1x261)/100 = 44.631

If we round our answer it equals 44.6

Find the EXACT distance between the two points.



(9, 31) and (12, 25)

Answers

Subtract the big x coordinate from the small x coordinate and the big y coordinate from the small y coordinate. 12-9=3, and 31-25=6. 3 X points and 6 y points away.

Step-by-step explanation:

the distance between 2 points is the Hypotenuse of a right-angled triangle. its legs are the x and y coordinate differences.

and so, we can use Pythagoras

c² = a² + b²

with c being the Hypotenuse, and a, b being the legs.

so,

the x difference is 9-12 = -3

the y difference is 31-25 = 6

therefore,

distance² = (-3)² + 6² = 9 + 36 = 45

distance = sqrt(45) = 6.708203932...

make r the formula t=r/r-3

Answers

Answer:

R = 3t/t₋1

Step-by-step explanation: I'm not sure if its correct.

What is the greatest common factor of 31 and 45?

Answers

The Answer is 15,good look!

Greatest Common Factor of 31 and 45 is :

(i) 1

How to solve math equation

Answers

By using a calculator

Graph the point (−1, 5/2) on the coordinate plane.

PLEASE HELP ASAP

Answers

Answer:

The answer is 2 1/2

Step-by-step explanation:

The graph of point (-1,5/2) will be 1 unit left and 2.5 units up from the origin and has been plotted below.

What are coordinates?

A pair of numbers that employ the horizontal and vertical distinctions from the two reference axes to represent a point's placement on a coordinate plane. typically expressed by the x-value and y-value pairs (x,y).

Coordinate is the denotation of horizontal and vertical distinctions in a coordinate plane with actual distance as per a given scale factor.

The general form of coordinate (x,y) shows x distance far from the origin in the horizontal direction and y distance far from the origin in the vertical direction.

(-1,5/2) → -1 units refer to 1 unit left due to the minus sign.

5/2 = 2.5 its positive so 2.5 units up.

Hence "The graph of point (-1,5/2) will be 1 unit left and 2.5 units up from the origin".

For more about coordinates,

brainly.com/question/7869125

#SPJ2

5 3/5 divide by 2 2/3

Answers

Answer 2 1/10

work is shown in the picture above. I hope this helps.

A quadrilateral has two angles that measure 200 and 30°. The other two angles are in a
ratio of 6:7. What are the measures of those two angles?

Answers

Answer:

60 and 70°

Step-by-step explanation:

the angle sum of a quadrilateral is 360

200°+30°+6x+7x=360°

13x=130°

x=10°

1st angle: 10°×6=60°

2nd angle: 10°×7=70°

Mathematic 19 don’t understand

Answers

Answer:

1.75 x 10^3

Step-by-step explanation:

This is quite a simple question really, we just have to remember one thing, the exponent laws. When both exponents have the same base and are getting divided by each other, you subtract the exponents.

So in this case we have 10^8 on top divided by the 10^5 on the bottom, so now you just subtract the 5 from 8 and you get 3 as your final exponent. So your power would just be 10^3.

The final step is just dividing 7 by 4 which is 1.75

Combine the power and 1.75 together to get the correct notation

1.75 x 10^3

Carlo and his two brothers helped to decorate the house for the party. Each of them blows 12 balloons. But 5 balloons pop. How many balloons do they have for decoration.

Answers

Answer:

31

Step-by-step explanation:

thye blow up 36 balloons in total but 5 pop 36-5=31

Which equation represents a line that is perpendicular to y = 3x - ?

Answers

Answer: y=-1/3x+4

Step-by-step explanation:

When a line is perpendicular to another, their slopes will be opposite reciprocals. For example, 1 would be -1, -3 would be [tex]\frac{1}{3}[/tex], and [tex]\frac{5}{1}[/tex] would be -5. The equation is written in slope-intercept form:

y=mx+b

y=3x-4

m is the slope, so next find the equation with the opposite reciprocal of 3, [tex]-\frac{1}{3}[/tex]:

Therefore, y=-1/3x+4 is the correct answer.

Please help it’s a test and it is past due!!! NO LINKS please!!!!
Use the substitution method to solve the system of equation!!! Choose the correct ordered pair!?!? Use the picture below to help you!!

Answers

Answer:

The answer is C. (-2, 7)

Good luck :)

estimate the area of the following irregular shapes

Answers

Answer and Explanation: We will find the area of the given shape:

To find the area, we will count the number of squares of the shaded area.

While calculating the area for a more accurate estimate, we count the square as “1” if the shaded region covers more than half of each square. By counting the squares, the area is approximately 50 square units.

a joker cap is in the form of a right circular cone of base radius 10.5cm and height 36cm. find the area of sheet to make 20 such caps....?

plz answer this

Answers

We know that

l² = r² + h²

l² = (10.5)² + (36)²

l² = 110.25 + 1296

l² = 1406.5

l = √(1406.5)

l = 37.5 cm

Now,

CSA of cone = πrl

=> 22/7 × 10.5 × 37.5

=> 22 × 1.5 × 37.5

=> 1237.5 cm²

Area of 20 caps = 20 × 1237.5

=> 24750 cm²

Answer:

24740 cm²

Step-by-step explanation:

First let us find the slant height (l) of the corn

l²  =  r²  +  h²

l²  =  (10.5)² + (36)²

l²  =  110.25 +  1296

l²  =  1406.25

l  =  √1406.25

l  = 37.5 cm

Now let us use this formula to find the area of a corn

π r l

π × 10.5 × 37.5

1237.00 cm²

And now let's find the area of 20 caps or corns

1237.00 × 20

24740 cm²

Hope this helps you :-)

if I was 14 in 1947 then how old am I?

Answers

you would be 88 :)))))))))))

PLEASE HELP ME!!! GIVING BRAINLIEST

Answers

Hi there! I am here to help with your question.

I believe the answer is A, 39°, 57 minutes 23.76 seconds.

Thank you and I hope this helped.

Answer:

The correct answer is A

Step-by-step explanation:

hope it will help you

How is solving −7x = −10.5 different from solving − 1 7 x = −10.5? How are the solutions related? Complete the explanation.

Answers

They are different because -7 is not equal to -17

Ajug contains 42 liters of milk. How
many milliliters of milk does it contain?
420 mL
B
4,200 mL
42,000 mL
4.2 mL

Answers

Based on the information given the number of milliliters of milk does it contain is 42,000 mL.

1 liter=1000 ml

Using this formula

Number of milliliters=Number of liters×1,000 ml

Where:

Number of liters=42 liters

Let plug in the formula

Number of milliliters=42 liters×1,000 ml

Number of milliliters=42,000 ml

Inconclusion  the number of milliliters of milk does it contain is 42,000 mL.

Learn more about milliliters here:https://brainly.com/question/1295017

in a class of 40 students, only 20% of the students are participating in an art competition. how many students are not taking part in the competition?​

Answers

Answer:  32

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

Explanation:

There are two approaches.

Method 1)

20% of 40 = 0.20*40 = 8

Since 8 students are participating, this means 40-8 = 32 are not participating.

-----------

Method 2)

20% are participating, so 100% - 20% = 80% are not participating

80% of 40 = 0.80*40 = 32

If Mrs. Hill takes out a mortgage for $80,000 with a 4% interest rate, what will her interest be after 20 years? Help ASAP I’ll give so much points!

Answers

Answer:

After 20 years, Mrs. Hill is owed $144,000.

Step-by-step explanation:

Using PRT/100, we can find the interest Mr. Hill has to pay extra.=> 80000 x 4 x 20/100=> 800 x 4 x 20=> 3200 x 20=> 64000Total amount to pay: $144,000

Conclusion:

Therefore, after 20 years, Mrs. Hill is owed:

$144,000.

Hoped this helped.

[tex]GeniusUSer[/tex]

TI
Assessment
Vhich table of values can be used to graph the function y = - 4x +3?
x
y
-1
-1
0
3
1
7
2
11
X
y
3
O
-1
-9
-1
7
1
3
15
x
0
1
3
-1
-5
-9
2
3
3
X
Y
3
7
11
15
3
or False
function's graph may include solutions that do not appear in its table of

Answers

Answer:

B, y=X. Hope it works

Step-by-step explanation:

I put the Question here #1

Answers

Answer:

sqrt( 74)

8.602

Step-by-step explanation:

To find the distance between the two points we use the formula

d = sqrt( ( x2-x1)^2 +(y2-y1)^2)

   = sqrt( ( 3- -2)^2 + ( -2 -5)^2)

   = sqrt( (3+2)^2 + ( -7)^2)

   = sqrt( 5^2 (-7)^2)

    = sqrt( 25+49)

    = sqrt( 74)

approximately 8.602325267

To the nearest thousandth

  approximately 8.602

System of equation

Value of b

Answers

[tex]8a + 9b = 12 \\ a + b = \frac{12}{8} \div 9 \\ = - 6[/tex]

The sum of three consecutive numbers is 75.
What is the smallest of the three numbers ?

Answers

Answer:

Step-by-step explanation:

y + y + 1 + y + 2 = 75

3y + 3 = 75

3y = 72

y = 24

y +1 = 25

y + 2 = 26

24 + 25 +26

49 + 26 = 75

Answer: 24, 25, 26

someone solve asap whats the answer for this

Answers

Answer: The answer is in the 1st image.

Explanation: The explanation is in the 2nd image.

What is the perimeter?

6 yards
8 yards
4 yards

Answers

Nvm i messed up my math

Translate each of the following algebraic expressions into word phrase.

7x-7​

Answers

-49x

Multiplying a positive and a negative equals a negative:
-7x7
Which gets you -49x

d.One rectangle weighs what

Answers

Answer:

the answer is 2

Step-by-step explanation:

because 7 + 2 = 9 then 9+2=11

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