Answer:
27.4285714286
Step-by-step explanation:
You would divide 64 by 7 and multiply that by 3.
So we know that the formula for the area of a rectangle is

.
Now both the length and width of the rectangle increase at 3 km/s, therefore,
![A(t) = (3t+l)*(3t+w). Since the initial length = initial width = 4 km, then the initial area = 16 [tex]km^2](https://tex.z-dn.net/?f=A%28t%29%20%3D%20%283t%2Bl%29%2A%283t%2Bw%29.%20Since%20the%20initial%20length%20%3D%20initial%20width%20%3D%204%20km%2C%20then%20the%20initial%20area%20%3D%2016%20%5Btex%5Dkm%5E2)
. We want to know the time when the area is four times its original area, therefore, our new formula is:

. Plugging in our known
values we have:
![64 [km^2] = (3t + 4 [km])*(3t + 4 [km])](https://tex.z-dn.net/?f=64%20%5Bkm%5E2%5D%20%3D%20%283t%20%2B%204%20%5Bkm%5D%29%2A%283t%20%2B%204%20%5Bkm%5D%29)

The area is four times its original area after <span>\frac{4}{3} s[/tex]</span>.
As the image is magnified by a factor of 1: 7(1/4)
= 1: (29/4)
= 4/29.
The length of x must've been also increased by a factor of 4/ 29.
Using this,
The scaled value of x will be,
3(4/29)
= 12/29 units.
Step-by-step explanation:
Diameter = 2x Radius
Radius = 1/2 Diameter

Answer:0
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0
Step-by-step explanation: