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slamgirl [31]
3 years ago
7

How do you find the area of a traizoid

Mathematics
1 answer:
BaLLatris [955]3 years ago
5 0

[(base + base)*high]/2

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Steel prices were $4.30 per foot and increased 10%. What is the new price ?
Artist 52 [7]
The new price is 4.73
8 0
3 years ago
Plz do this question if you did I will very appreciated you. plz.​
Nastasia [14]

The area formula of a circle is r^{2} × π.

With that being said, we can solve both problems!

Starting with part A:

-The radius we know is 21cm. From there, we can substitute in our formula with the new value.

21^{2} x π

From there, we can square our radius:

(21 x 21) x π

(441) x π

And finally, we can multiply by pi to get our answer.

(441) x π

1385.44236023

Which rounded to the nearest tenth is 1385.4. Therefore, the area of the porthole is 1385.4 centimetres.

The second part can be followed with the same process, hopefully you understand the concept enough to where you're comfortable solving problems like this on your own. Feel free to reach out if you have any further trouble!

<em>Hope this helped! :)</em>

5 0
3 years ago
Does someone mind helping me with this?
Contact [7]

Answer:

should be the 1st 2nd and the 4th one

Step-by-step explanation:

if not correct plz tell me

3 0
3 years ago
Use the change of variables s=x+3y, t=y to find the area of the ellipse x2+6xy+10y2≤1.
MArishka [77]

t=y\implies s=x+3t\implies x=s-3t

Then

x^2+6xy+10y^2=(s-3t)^2+6(s-3t)t+10t^2=s^2+t^2\le1

which is a disk of radius 1, hence with area \pi.

5 0
3 years ago
Help pls I don’t get it
Lina20 [59]
Me neitherrrrrrrrrrrrrr
4 0
3 years ago
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