Mathematics, 28.06.2019 23:20 randyg0531

a circle has a circumference of 2 pi cm. which statement about the circumference and area is true?
a. comparison of the area and circumference is not possible since the area cannot be determined.
b. the numerical values of the circumference and area of the circle are equal.
c. the numerical value of the circumference is greater than the numerical value of the area.
d. the numerical value of the circumference is less than the numerical value of the area.
!

Answers: 3

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Answer from: lakinbacon4

The numerical value of the circumference is greater than the numerical value of the area

Step-by-step explanation:

Verify each statement

case A) Comparison of the area and circumference is not possible since the area cannot be determined.

The statement is False

Because

The area can be determined, since knowing the circumference, I can calculate the radius and with the radius I can know the area.

case B) The numerical values of the circumference and area of the circle are equal

The statement is False

Because

The circumference is equal to $C=2\pi \ cm$

Find the radius

we know that

$C=2\pi r$

substitute the given values

$2\pi=2\pi r$

$r=1\ cm$

Find the area

$A=\pi r^{2}$

substitute the value of radius

$A=\pi (1)^{2}$

$A=\pi\ cm^{2}$

therefore

$2\pi \neq \pi$

case C) The numerical value of the circumference is greater than the numerical value of the area

The statement is True

because

Compare the numerical value

$2\pi \pi$

see the case B) procedure

case D) The numerical value of the circumference is less than the numerical value of the area

The statement is False

Because, the numerical value of the circumference is greater than the numerical value of the area

see the case B) procedure

Answer from: Quest

answer: 7 x 2/5 = 2.8 hours, is your answer. your welcome! : 3

step-by-step explanation: first work out how long it took to hose 1/7 of the lawn which is 2/5 hours. times that by 7 to get the whole lawn.

sorry i don't know the other answer. i didn't learn what a proportional relationship is.

Answer from: Quest

yes, gavin is right.

step-by-step explanation:

gavin is correct.

this problem is about converting 9% per year to how many percent per quarter. the rate is still the same. it only differed in the time period. so, through dimensional analysis,

9% per year × (1 year / 4 quarters) = 2.25% per quarter

if he was asked to convert 9% per year to how many percent per quarter compounded quarterly, then you will not simply divide by four. this is because compounding is not linear.

hope this , have a good day. c;

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