GED MATH FORMULAS EXAM
QUESTIONS AND CORRECT ANSWERS
Area of a trapezoid - Answer-A = 1/2h(b1 + b2)
surface area of a rectangular/right prism - Answer-SA = ph + 2B
surface area of a cylinder - Answer-SA = 2πrh + 2πr^2
surface area of a pyramid - Answer-SA = 1/2ps + B
surface area of a cone - Answer-SA = πrs + πr^2
surface area of a sphere - Answer-SA = 4πr^2
symbol for squared (as in exponent 2) - Answer-^2
symbol for cubed (as in exponent 3) - Answer-^3
volume of a rectangular/right prism - Answer-V = Bh
volume of a cylinder - Answer-V = πr^2h
volume of a pyramid - Answer-V = 1/3Bh
volume of a cone - Answer-V = 1/3 πr^2h
volume of a sphere - Answer-V = 4/3πr^3
simple interest - Answer-I = Prt
distance formula - Answer-d = rt (r=rate. t= time)
total cost - Answer-= (number of units) x (price per unit)
mean - Answer-equal to the total of the values of a data set, divided by the number of
elements in the data set
median - Answer-the middle value in an odd number of ordered values of a data set, or
the mean of the two middle values in an even number of ordered values in a data set
Mean - Answer-The average
Mode - Answer-The number that shows the most
QUESTIONS AND CORRECT ANSWERS
Area of a trapezoid - Answer-A = 1/2h(b1 + b2)
surface area of a rectangular/right prism - Answer-SA = ph + 2B
surface area of a cylinder - Answer-SA = 2πrh + 2πr^2
surface area of a pyramid - Answer-SA = 1/2ps + B
surface area of a cone - Answer-SA = πrs + πr^2
surface area of a sphere - Answer-SA = 4πr^2
symbol for squared (as in exponent 2) - Answer-^2
symbol for cubed (as in exponent 3) - Answer-^3
volume of a rectangular/right prism - Answer-V = Bh
volume of a cylinder - Answer-V = πr^2h
volume of a pyramid - Answer-V = 1/3Bh
volume of a cone - Answer-V = 1/3 πr^2h
volume of a sphere - Answer-V = 4/3πr^3
simple interest - Answer-I = Prt
distance formula - Answer-d = rt (r=rate. t= time)
total cost - Answer-= (number of units) x (price per unit)
mean - Answer-equal to the total of the values of a data set, divided by the number of
elements in the data set
median - Answer-the middle value in an odd number of ordered values of a data set, or
the mean of the two middle values in an even number of ordered values in a data set
Mean - Answer-The average
Mode - Answer-The number that shows the most
