Question

The size of a bicycle is determined by the diameter of the wheel. You want a 20-in bicycle for your birthday. What is the area of one of the wheels?
Answer

385.47 in2

314.16 in2

484.37 in2

345.54 in2

Answer 1

@cutepochacco

Answer 2

let me do this :)

Answer 3

ok so do you know the steps you need to do this?

Answer 4

diameter=12 inches , so the radius will be 6 inches
Area for a circle is \(A=\pi r^2\), substitute the value of your radius in the formula.

Answer 5

what

Answer 6

ok wolf you plug in 6 witch is the radius and 12 for pie I believe...

Answer 7

\[6\times6=36\]

Answer 8

then take 12 and times it right @Data_LG2 ?

Answer 9

12?????! o.0

Answer 10

its been a while sense i did this kind or problem i forgot what to do with the diameter! lol

Answer 11

im trying my best though

Answer 12

\(\LARGE DIAMETER=\frac{1}{2}RADIUS\)

\(\LARGE AREA\ OF\ CIRCLE= \pi r^2\), where r=radius

why I am using area of the circle to calculate the area of a wheel?

because I believe that a wheel is a circle, don't you think?

Answer 13

You are given the value of the \(\Large DIAMETER\), which is \(\Large 12 inches\). To get the radius, divide the diameter by 2.

THEN plug the value of the radius into the formula.

Answer 14

well how do you get pie though

Answer 15

\(\LARGE \pi=3.145\) , this is a FAMOUS constant!

Answer 16

ohhhhhhh!!

Answer 17

understand?

Answer 18

i do now i remember 100% now

Answer 19

glad to know :)

Answer 20

you must remember all kind of things because I can assure you that it will really affect you and may help you someday . ^_^