Answer:
In the case of the equilateral triangle, , the exterior angle, plus 60 equals 180. Subtracting 60 from both sides of this equation gives us a value of equal to 120. This means that the exterior angle of an equilateral triangle is equal to 120 degrees. The sum of all the exterior angles is always 360 degrees.
Step-by-step explanation:
SOLUTION
We want to find the area of the circle in the picture given.
We have been given the formula as

From the circle, the radius r = 11 in.
The area of the circle becomes

Hence the answer is 363 square-inches
Answer:
x² + 3x - 28
Step-by-step explanation:
Each term in the second factor is multiplied by each term in the first factor
(x + 7)(x - 4)
= x(x - 4) + 7(x - 4) ← distribute both parenthesis
= x² - 4x + 7x - 28 ← collect like terms
= x² + 3x - 28
If a=0, then the denominator is equal to 0. Since you cannot divide by zero, you are not allowed to do this.
Hope This helps!