This practice set is built from the highest-difficulty question types on the Digital SAT Math section — the ones students most often miss, mix up, or mis-calculate under time pressure. Every answer has been independently verified.
The sum of the measures in degrees of the angles of a triangle is 180. There are 360 degrees of arc in a circle. There are 2π radians of arc in a circle. Circle area = πr². Circle circumference = 2πr. Cylinder volume = πr²h. Sphere volume = (4/3)πr³. Cone volume = (1/3)πr²h. Pyramid volume = (1/3)(base)(height).