N+n-0.18n= what does this equal?

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles

With number 11 ( show how you got the answer)

Which is the correct first step in finding the area of the base of a cylinder with a volume of 26x cubic meters and a height of 6.5 meters? v=bh 6.5=b(26x) v=bh v=26pi+(6.5) v=bh v=26pi(6.5) v=bh 26pi=b(6.5)