Answer:
impossible
Step-by-step explanation:
you need 3 different values including a side
Answer:
d
Step-by-step explanation:
I'm sorry my friend but I need as much help as you do I'm just answering this so I can get some help sorry
Answer:
Length of the base = 10
Length of the height = 4
Step-by-step explanation:
Remember that the area of a triangle is given by the formula
![A=\frac{1}{2} bh](https://tex.z-dn.net/?f=A%3D%5Cfrac%7B1%7D%7B2%7D%20bh)
where
is the area
is the base
is the height
We know from our problem that the base of the triangle is 2x + 2, so
. We also know that its height is x and its area is 20 ft^2, so
and
. Let's replace the values in our formula to find
:
![A=\frac{1}{2} bh](https://tex.z-dn.net/?f=A%3D%5Cfrac%7B1%7D%7B2%7D%20bh)
![20=(\frac{1}{2} )(2x+2)(x)](https://tex.z-dn.net/?f=20%3D%28%5Cfrac%7B1%7D%7B2%7D%20%29%282x%2B2%29%28x%29)
![20=(\frac{1}{2} )2(x+1)(x)](https://tex.z-dn.net/?f=20%3D%28%5Cfrac%7B1%7D%7B2%7D%20%292%28x%2B1%29%28x%29)
![20=x(x+1)](https://tex.z-dn.net/?f=20%3Dx%28x%2B1%29)
![20=x^2+x](https://tex.z-dn.net/?f=20%3Dx%5E2%2Bx)
![x^2+x-20=0](https://tex.z-dn.net/?f=x%5E2%2Bx-20%3D0)
![(x-4)(x+5)=0](https://tex.z-dn.net/?f=%28x-4%29%28x%2B5%29%3D0)
or ![x=-5](https://tex.z-dn.net/?f=x%3D-5)
Since distance cannot be negative, ![x=4](https://tex.z-dn.net/?f=x%3D4)
Now we can substitute the value for
in the base and height:
base = ![2x+2](https://tex.z-dn.net/?f=2x%2B2)
base = ![2(4)+2](https://tex.z-dn.net/?f=2%284%29%2B2)
base = ![8+2](https://tex.z-dn.net/?f=8%2B2)
base = ![10](https://tex.z-dn.net/?f=10)
height = ![x](https://tex.z-dn.net/?f=x)
height = ![4](https://tex.z-dn.net/?f=4)
Answer:
153.94 cm
Step-by-step explanation:
a = r^pi squared
r = d/2
7^pi = 21.98
21.98 squared = 153.94 cm