The circumference of a circle has the formula:
C = 2 π r
Now when it is dilated by a factor of 4, this only means
that the radius is also multiplied by a factor of 4, therefore the new
circumference is:
C’ = 2 π (4 r)
C’ = 8 π r
So it also grows 4 times.
Answer:
<span>The circumference will be 4 times greater than the
original.</span>
Answer:Height to width is 3:4
Width to height is 4:3
Step-by-step explanation:
A TV screen is 15 inches high and 20 inches wide.
Height of TV screen is 15 inches
Width of TV screen is 20 inches
To find ratio of Height to width
we replace the numbers in the ratio Height : width
15: 20
Divide both numbers by 5, so ratio becomes
3: 4
Height to width is 3:4
To find ratio of Width to height
we replace the numbers in the ratio Width : height
20:15
Divide both numbers by 5, so ratio becomes
4:3
Width to height is 4:3
Answer:
83%
Step-by-step explanation:
No. of questions answered correctly = 166
Total no. of questions = 200
Percentage of questions answered correctly = (166/200)*100 = 83%
<u>Question</u><u>:</u>
In triangle JKL, the measure of angle L = 90°, KJ = 37, LK = 12, and JL = 35. What ratio represents the cosine of angle J?
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<u>Solution</u><u>:</u>
The triangle JKL should look like that in the attachment.
Cosine of J = adjacent side/hypotenuse
= LJ/KJ
= 35/37
There is not enough information given for me to answer this question.
