Find the Surface area of 3d composite figures.

A50% increase followed by 33 1/2% decrease

Need showing work for this problem 56.25 ×25.80

Which statement is true about the extreme value of the given quadratic equation? a. the equation has a maximum value with a y-coordinate of -21. b. the equation has a maximum value with a y-coordinate of -27. c. the equation has a minimum value with a y-coordinate of -21. d. the equation has a minimum value with a y-coordinate of -27.