数学PS题题目看不懂

judyenglishS

The sides of a square region,measured to the nearest centimeters ,are 6 centimeters long. The least possible value of the actual area of the square region is
36.00 sq com
35.00 sq com
33.75 sq com
30.25 sq com
25.00 sq com

judyenglishS

还有一题：最后一句话看不懂
An object thrown directly upward is ata a height of h feet after t seconds,where h =-16(t-3)^2+150
At what height, in feet ,is the object 2 seconds after it reaches its maximum height?
6
86
134
150
214
抛物线的顶点是（-3,150）所以its max heitght 应该是150，但是2 seconds after 看不懂