3 years ago

I WILL GIVE BRAINLIEST!

Mathematics

1 answer:

dsp733 years ago

5 0

Answer:

No, 68.75% waited less than 30mins

I don't really know about the other one, but i tried my best, soooo sorry

soz

Hope that helped!!! k

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Mrs. Hellerud bought 18.84 feet of fencing to go around her tree in her front yard. She wants to know the area to find how big o

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the fencing is the perimeter to the tree, then we can use the formula of the perimeter of a circle to replace this value

$\begin{gathered} P=2\times\pi\times r \\ 18.84=2\times\pi\times r \end{gathered}$

now we can solve r from the formula to know the radious

$\frac{18.84}{2\times\pi}=r$

we can use 3.14 to pi

$\begin{gathered} r=\frac{18.84}{2\times3.14} \\ \\ r=3 \end{gathered}$

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now we can use the formula of the area of the circle to calculate the total area

$A=\pi\times r^2$

and replace the known value of the radious and pi

$\begin{gathered} A=3.14\times3^2 \\ \\ A=28.26 \end{gathered}$

<em>the area is 28.26 square feet</em>

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How do you write 47.15 in expanded form?

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