GED Math FREE Sample Practice Questions 10 Sample GED Math Practice Questions 1- What is the area of a square whose diagonal is 8? A. 16 B. 32 C. 36 D. 64 2- The perimeter of the trapezoid below is 36 cm. What is its area? A. 576 cm\ (^2\) B. 70 cm\ (^2\) C. 48 cm\ (^2\) D. 24 cm\ (^2\) 3- A bank is offering \ (3.5\%\) simple interest on a savings account.