Question

The radius of a circle is 4.3 inches. Using the formula A ≈ 3r^2, what is the approximate area of the circle?

Answer 1

Plug and chug

Answer 2

what the that makes no sense

Answer 3

(Bad approximation, but, whatever they ask ...)

Answer 4

wait 3

Answer 5

o_O

Answer 6

yes, 3 instead of \(\pi\).

Answer 7

@lvictoria529 @Redcan

Answer 8

word, u sure it says that

Answer 9

Well, that is just an approximation ...

Answer 10

but pie is also an approximation

Answer 11

(Although, area of a circle, is kind of an approximation for an n-gon with even sides, as n tends to infinity.)

Answer 12

\[\pi = 3.14\]

Answer 13

Haha anyways, away from all that mess, so your approximation is 3r^2 so plug in the value for r and evaluate nothing to it

Answer 14

I dont get it

Answer 15

The formula is: \(\color{#000000}{ \displaystyle {\rm A}= 3r^2 }\)

So, if my radius was 5 meters, then:

\(\color{#000000}{ \displaystyle {\rm A}= 3(5~{\rm m})^2=3(25~{\rm m}^2)=75~{\rm m}^2 }\)

Answer 16

What is the value of r?

Answer 17

So, if your radius is 4.3 inches, then what do you get?