The surface area of a right circular cone is 321 cm2 This cone is enlarged by multiplying both the radius and slant height by 3. What is the surface area of the new cone? a
35pi cm²

B
96pi cm²
C
288pi cm²
d
192pi cm²

Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅? a. sin (α -β) = sin α cos β – cos α sin β b. cos (α -β) = cos α cos β – sin α sin β c. cos (α -β) = cos α cos β + sin α sin β d. sin (α + β) = sin α cos β + cos α sin β

When you are making a circle graph by hand, how do you convert a number for a part into its corresponding angle measure in the circle graph? when you are making a circle graph by hand, what should you do if one of your angle measures is greater than 180°?

Nine more than four times a number is the same as one less than twice the number. find the number?