Question

A circle has a diameter of 11.4 . find the area of the circle.

**fan & medal**

Answer 1

C = 2(pi)r or C=(pi)d

Answer 2

You don't need to fan me for this.
The area of a circle is (pi)r^2

The radius of a circle is half the diameter.

Just plug in the numbers.

Answer 3

What rere just gave you is the formula for circumference

Answer 4

Yes @Littlebird all he has to do is plug in the numbers into the equation.

Answer 5

whats pi? @rere234 @Littlebird

Answer 6

does the area =22.4? @Littlebird @rere234

Answer 7

There is usually a symbol for pi on your calculator. Some problems allow you to just use 3.14.

Answer 8

so 6.28? @Littlebird

Answer 9

@ littlebird you didn't make a model as I showed you

Answer 10

Your diameter is 11.
Area=pir^2 or....
Pi times the radius squared

For area.....

pi x (11.4/2)^2
3.14 x 5.7^2
3.14 x (5.7x5.7)
3.14 x 32.49

Answer 11

I meant to say 11.4 for the diameter

Answer 12

like this

Answer 13

please answer

Answer 14

A box?

Answer 15

for @allay's Question

Answer 16

so 102.0186 @Littlebird

Answer 17

Yes

When you do problems like this in the future, ask your teacher if he/ she wants you to use pi from the calculator or just 3.14. Also, make sure to ask them to what place they'd like you to round to.

Answer 18

thanks for your help! @Littlebird