Question

i will draw it hold on

Answer 1

Find the area of the circle. use pi=3.14

Answer 2

if u r looking for the area : 15.25^2*pi=730.6

Answer 3

The area A is defined as: \[A := {{d^2 \pi} \over 4}\]

Answer 4

in the back of the book the answer is 730.2

Answer 5

What do you get for A, catherine ?

Answer 6

A? area is 95.77

Answer 7

Well, 95.77 is wrong, I'm afraid.. How did you get it? What formula did you use?

Answer 8

Im not very good at area and stuff. I multiplied 30.5 times 3.14

Answer 9

Do you add it?

Answer 10

area= radius^2 * pi

Answer 11

and they gave u the diameter

Answer 12

Hmm.. unfortunately, it's not that easy.. As i posted above, you have to square the diameter, mutiply it with pi and divide it by 4..

Do you know what squaring means?

Answer 13

No i dont.

Answer 14

Ok, well - squaring means, taking a number and multiplying it with itself again, for example:

\[x^2 = x * x\]

Now if you would plug in 5 for x - what's x²? Can you figure it out?

Answer 15

Here is a video showing how to do this
http://www.khanacademy.org/math/geometry-1/core-geometry/v/area-of-a-circle

Answer 16

How do u find the area of a circle that is all i want to know

Answer 17

Yeah - khanacademy is great. Good idea phi - i'd suggest, you watch the video phi postet, catherine :)

Answer 18

I just want to know how to find the area of a circle it teaches it in the book but that way is harder

Answer 19

u r given the diameter which is 2 times longer the the radius

Answer 20

Well - unfortunately, you need "squaring" to figure it out ... But it's not hard - the video will explain it, i'm sure ;)

Answer 21

we saw it in computer lab but it is still complicated

Answer 22

to find the area u take the radius and times itself (squaring) then u multiply by pi

Answer 23

Our class goes on knanacademy

Answer 24

So did you figure it out or are you still stuck? If so.. what seems to be the problem?

Answer 25

Its ok ill look it up