Question

A circular plate has a diameter of 6 inches.



What is the exact area of the plate?



A.


36π square inches


B.


6π square inches


C.


9π square inches


D.


3π square inches

Answer 1

I think A

Answer 2

Well, you can calculate the area of a circle with the following formula:
\[A _{\circ}= \pi r^2\]
So, therefore:
\[A_ \circ = \pi (6)^2\]

Answer 3

I got 113.04

Answer 4

the requested area is given by this formula:
\[A = \pi \times \frac{{{D^2}}}{4} = \pi \times \frac{{36}}{4} = ...inche{s^2}\]

Answer 5

oooh, it's the diameter, read wrong :(

Answer 6

wait so 3.14 x 36 div 4 ?

Answer 7

you don't have to multiply by 3.14, you have to write pi only

Answer 8

but pi = 3.14

Answer 9

yes! nevertheless you have to write pi instead of 3.14

Answer 10

okay.

Answer 11

so, what dou you get?

Answer 12

28.26

Answer 13

I got:
\[A = 9 \times \pi {\kern 1pt} inche{s^2}\]

Answer 14

oh. well it still equals the same thing.

Answer 15

brb

Answer 16

you have to divide 36 by 4 only

Answer 17

which is 9

Answer 18

Oh! C :D lol Yay! Thank you! ^u^

Answer 19

:)