Use = 3.14 to estimate the area of the circle. Round your answer to the nearest hundredth if necessary.

Question

Use   = 3.14 to estimate the area of the circle. Round your answer to the nearest hundredth if necessary.

anonymous · Answer

attachment

mehek14 · Answer

do you know the formula?

mehek14 · Answer

@farmgirl11 ?

anonymous · Answer

i know it but i cant really remember how to do it if you know what i mean

solomonzelman · Answer

$\large\color{black}{ \displaystyle  \pi \approx 3.14}$
(that curvy equal sign, is a symbol for "approximately equal to")

solomonzelman · Answer

I will give you a couple of facts (for now).

$\large\color{black}{ \displaystyle  {\rm A}={\tiny~}\pi{\tiny~}{\rm r}^2}$
$\large\color{black}{ \displaystyle  {\rm r}{\tiny~}={\rm d}{\tiny~}\div{\tiny~}{\rm 2}}$

solomonzelman · Answer

Do you know what these 2 things (that I posted) mean ?

anonymous · Answer

not really

solomonzelman · Answer

the first one is saying that
" the Area [of a circle] = pi times radius squared"
|dw:1426104752250:dw|

and the second thing is saying that
" radius = diameter divided by 2"
in other words, radius is 1/2 of the diameter

solomonzelman · Answer

|dw:1426104921239:dw|

solomonzelman · Answer

First, knowing that the diameter is 24.4m can you find the radius ?

solomonzelman · Answer

hint: radius is twice less than the diameter

anonymous · Answer

no idea

anonymous · Answer

can someone plz help