Answer:
area = (n * side length * apothem) / 2
where "n" is number of sides
area = 8 * 10 * K / 2
area = 80K / 2
https://www.1728.org/polygon.htm
Step-by-step explanation:
(x - 5i√2)(x +5i√2)
given the roots of a polynomial p(x), say x = a and x = b
then the factors are (x - a)(x - b)
and p(x) is the product of the factors ⇒ p(x) = (x - a)(x - b)
here x² + 50 = 0 ⇒ x² = - 50 → ( set = 0 for roots)
take the square root of both sides
x = ± √-50 = ± √(25 × 2 × -1) = √25 × √2 × √-1 = ± 5i√2
The roots are x = ± 5i√2
thus the factors are ( x - ( - 5i√2)) and (x - (+5i√2))
x² + 50 = (x + 5i√2)(x - 5i√2)
∠ACB = ∠ABC = 360°/8 = 45°
_____
∠ABC is an external angle of the octagon. Since it is equiangular, all external angles are equal. The sum of external angles of a convex polygon is always 360°, so one of 8 of those angles will be 360°/8 = 45°.
Answer:
x = 163
Step-by-step explanation:
(x-5)+22= 180
x = 143
hope this helps!!!
