Answer:
Step-by-step explanation:
the perimeter is : P = 2(L+W)
P= 2(3x+6+3x²)
P= 6x² +6x+12
Answer:
X = 1
Y = 5
Step-by-step explanation:
we have to figure out what x and y = that make both answers correct
3 x 1 = 3
3 + 5 = 8
That means that the first equation is right with X = 1 and Y = 5
Let's see the second equation
5 x 1 = 5
5 + 5 = 10
That means both equations are right so the answer would be
X = 1 and
Y = 5
Answer:8f-16g
Step-by-step explanation:
-1f•(-8)-4g•4
F•8-16g
Answer:
1695.6
Step-by-step explanation:
The formula is radius x radius x 3.14 x height
6 x 6 = 36 x 3.14 = 113.04 x 15 = 1695.6
Answer:
56844.9 units squared
Step-by-step explanation:
The surface area of a cone is denoted by:
, where r is the radius and l is the slant height. The slant height is basically the length from a point on the base circle to the top vertex of the cone.
Here, since our diameter is 50 and diameter is twice the radius, then our radius is r = 50/2 = 25.
To find the slant height, we have to use the Pythagorean Theorem:
, where h is the height
![l^2=25^2+50^2=625+2500=3125](https://tex.z-dn.net/?f=l%5E2%3D25%5E2%2B50%5E2%3D625%2B2500%3D3125)
![\sqrt{l^2} =\sqrt{3125}](https://tex.z-dn.net/?f=%5Csqrt%7Bl%5E2%7D%20%3D%5Csqrt%7B3125%7D)
![l=25\sqrt{5}](https://tex.z-dn.net/?f=l%3D25%5Csqrt%7B5%7D)
Now, plug these values of r and l into the first equation above:
![A=\pi r^2+\frac{1}{2} \pi r^2*l](https://tex.z-dn.net/?f=A%3D%5Cpi%20r%5E2%2B%5Cfrac%7B1%7D%7B2%7D%20%5Cpi%20r%5E2%2Al)
≈ 56844.9 units squared