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
katrin2010 [14]
3 years ago
7

a chord is drawn 3 cm away from the centre of a circle of radius 5 cm. calculate the length of the chord​

Mathematics
1 answer:
lara [203]3 years ago
7 0

Answer:

8 cm

Step-by-step explanation:

the 3 cm line from the chord to the center of a circle is a leg of a right triangle which perpendicularly bisects the chord into two equal halves

draw the hypotenuse of the right triangle from the center of the circle to the endpoint of the chord. This is a radius measuring 5 cm.

find the missing leg of the right triangle

a^2= c^2- b^2

a^2= 25-9

a^2=16

a=4

this is only the measurement of half the chord. To find the full length of the chord multiply by two

4*2=8 cm

You might be interested in
Give two points with integer coordinates that have a slope of 10/7 between them
Fittoniya [83]

Answer:

(0,0) and (7,10)

Step-by-step explanation:

recall that the slope - intercept  form of a linear equation can be given as

y = mx + b

where m = slope and b = y intercept

in our case, we are given that slope, m = 10/7, hence our equation becomes

y = (10/7) x + b

since we are not given any information about the y-intercept, we can simply pick a value for b that is most convenient for us.

We pick b = 0, hence the equation simplifies to:

y = (10/7) x  ----- eq 1

we can see immediately that if x = 0, y must also = 0

proof if x = 0:

y = (10/7)(0) =0

since 0 is an integer, then (0,0) must be the first point.

we can also observe that for y to be an integer, we must get rid of the denominator 7. We can do this by multiply the right side by 7. Hence we let x = 7:

y = (10/7) x 7

y = 10

hence (7,10) is the second point.

7 0
3 years ago
Choose the line that is the best fit for the data.
Svet_ta [14]

Answer:

I would say line 2

Step-by-step explanation:

just think it is

3 0
2 years ago
Plz help me with the problem below
zalisa [80]

Answer:

10

Step-by-step explanation:

4 0
2 years ago
What is 3 5/6 - 7 1/2
-Dominant- [34]
<span>-3.66666666667 is da answer

</span>
5 0
3 years ago
Read 2 more answers
Find 45% of 60 with work
Ilya [14]
Step 1. convert 45% into a decimal value
45% = 0.45

step 2. multiply the decimal value with the main number
0.45 *60

step 3.  ???

step 4. Profit

6 0
3 years ago
Read 2 more answers
Other questions:
  • Is 36 a perfect square or not?
    14·2 answers
  • 2 Points
    9·1 answer
  • a jar only 11 red balls, 9 yellow balls, 5 green balls, and n white balls. what is the probability that a ball randomly chosen f
    11·1 answer
  • Virginia tossed a coin and it landed heads up three times in a row. What is the probability that this same coin will land heads
    10·1 answer
  • Please answer this question ;(
    7·1 answer
  • Cole makes t-shirts. He charges a fix amount to create a t-shirt design. He than charges and addition amount for each t-shirt co
    11·1 answer
  • Help ill give brainleist
    7·2 answers
  • A 3-yard roll of wrapping paper costs $13.14. What is the price per foot?​
    8·1 answer
  • 7. what is the measure of angle E?
    10·2 answers
  • NEED HELP 10 points
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!