Question

Which is approximately equal to the area of the circle? Use 3.14 for Pi

Answer 1

\[\pi r^2\]

Answer 2

Area is pi * r*r

\(\Large \color{Black}{\Rightarrow 3.14r^2 }\)

Answer 3

none..area = pi (r^2)
when r=1,,then the above ques comes into play
for approximation,,3.14 is used..
but if you want to be more and more precise..use (pi) ..the more digits you use of pi,,the more exact result you get..<--but last step is useless!!

Answer 4

Then that'd be:

\(\Large \color{Black}{\Rightarrow 3.14 \times 4 \times 4 }\)

Answer 5

thats ur radius

Answer 6

Parth are u sure that will give me my answer

Answer 7

I vouch for @ParthKohli

Answer 8

It is \(\approx\) 48.42

Answer 9

Thank you @Kiki547 :) you're now a good lad on OpenStudy :D

Answer 10

i am a girl u know right don't u mean lassie lol

Answer 11

he's sexist...he calls everyone a guy

Answer 12

lol i'm a bad boy xD

Answer 13

\[\pi\approx3.14,\qquad\qquad r=4\]\[A_{circle}=\pi r^2\approx3.14\times4^2=3.14\times16=48+1.6+0.64=50.24\]

Answer 14

Where did that 1.6 come from?

Answer 15

\[0.1\times16=1.6\]

Answer 16

\[3.14\times16=3\times16+0.1\times16+0.04\times16\]