The lid for a circular plastic food container has a diameter of 9 cm. What is the approximate area of the top of the lid? Use 3.14 to approximate pi and round your answer to the nearest hundredth. ___________________cm2 (the 2 is small) PLZ HELP< ASAO< NO GUESSING PLZ< I WILL GIVE MEDAL
@brittanydosey @mathmath333 @welshfella
@Quan99 @Unanimoose
@omarbirjas @pooja195 @Phebe @pitamar @pitamar @KJ4UTS @Jaynator495 @NadiaElhaj_1 @mikkel900 @brittanydosey @viixxen @chainedecho @Destinymasha @Deadpool.
Just find the area of the circle with a diameter of 9.
\[A = r^2\pi\]
@Destinymasha , do u go to k12, and r in Ms. Au's class??
okay can u guid me through it plz?
Using 3.14 as pi.
Remember that the radius is HALf of the diameter.
I got 63.585 is that it?????
9 divided by 2 is 4.5
4.5(2) times 3.14
and i got 63.585
so if i round to the nearest hundredth then that would be the same exactly right??
or would it be 63.600 or just plain 64
uggghhh, i am not good at math as u can see ;)
@linastar13
@welshfella
You are correct up to A = 63.585 cm^2 Now you need to round off to the nearest hundredth.
the area is 3.14 8 radius squared that is 3.14*4.5*4.5
|dw:1425937773475:dw|
Join our real-time social learning platform and learn together with your friends!