Answer:

Step-by-step explanation:
To solve this problem we need to be familiar with the formula for the surface area of a cone:

We are given the length of a side and the diameter, to calculate the radius divide the diameter in half:

To calculate the height of the cone, we must use the Pythagorean Theorem:

We can treat the side length as the hypotenuse
, the radius as the base
, and solve for height
. Set the expression up like this:

Now we can plug into our original formula:

Answer:
If you would like to write a * b + c in simplest form, you can do this using the following steps:a = x + 1b = x^2 + 2x - 1c = 2xa * b + c = (x + 1) * (x^2 + 2x - 1) + 2x = x^3 + 2x^2 - x + x^2 + 2x - 1 + 2x = x^3 + 3x^2 + 3x - 1The correct result would be x^3 + 3x^2 + 3x - 1.
Step-by-step explanation:
Answer:
81.9
Step-by-step explanation:
63 of 130 is 48.46%
Steps to solve "what percent is 63 of 130?"
63 of 130 can be written as:
63
130
To find percentage, we need to find an equivalent fraction with denominator 100. Multiply both numerator & denominator by 100.
3(b+100)= 6b
3b + 300 = 6b
300 = 3b
b = 100