Answer:
![A=1347.7\ cm^2](https://tex.z-dn.net/?f=A%3D1347.7%5C%20cm%5E2)
Step-by-step explanation:
Given that,
Radius of a cone, r = 13 cm
Slant height of the cone, l = 20 cm
We need to find the surface area of the cone. The formula for the surface area of the cone is given by :
![A=\pi rl +\pi r^2](https://tex.z-dn.net/?f=A%3D%5Cpi%20rl%20%2B%5Cpi%20r%5E2)
Put all the values,
![A=\pi r(l + r)\\\\A=\pi \times 13(20 + 13)\\\\A=1347.7\ cm^2](https://tex.z-dn.net/?f=A%3D%5Cpi%20r%28l%20%2B%20r%29%5C%5C%5C%5CA%3D%5Cpi%20%5Ctimes%2013%2820%20%2B%2013%29%5C%5C%5C%5CA%3D1347.7%5C%20cm%5E2)
So, the surface area of the cone is
.
Answer:
the answer is d. 4x²+x-6
Step-by-step explanation:
In order to combine the fractions, they need to have the same denominator.
So, multiply each of their numerators by the denominator they need to be equivalent.
This would look like this:
3x/x+3 --> 3x(x)/x(x+3) ---simplify this as--> 3x²/x(x+3)
x-2/x --> (x-2)(x+3)/x(x+3) ---simplify this as --> x²+x - 6/x(x+3)
3x 3x(x) x-2 (x-2)(x+3)
----- ---> ----- and -------- ---> ---------
x+3 x(x+3) x x(x+3)
now that both fractions have the same denominator, we can add their numerators.
3x² + x²+x-6 = 4x²+x -6
This should now look like this:
4x²+x -6
-------------
x(x+3)
Answer:
it is A . I hope its helpful
Answer: If the monomial has only one variable.
3x² is a monomial of the 2nd degree with a leading coefficient of 3.
Step-by-step explanation: Think of the your like terms such as the coefficents A polynomial which has only one term is called monomial.
The degree of a monomial is defined as the sum of all the exponents of the variables.
A leading coefficient is the number multiply to the variable.
Answer:
The answer is w^2 + 2xw + x^2