標題範例:Mathematics > Standard Multiple Choice
Read the following SAT test question and then click on a button to select your answer.
The perimeter of a 7-sided figure is 15. If the length of each side of the figure is increased by 2 units, what is the perimeter of the new figure?
(A) 17
(B) 22
(C) 24
(D) 29
(E) 30
謎底:
【剖析】
The perimeter is the sum of the lengths of all the sides. Since each of the seven sides is to be increased by 2, there will be a total increase of 14 in the perimeter. The original perimeter, 15, plus the increase, 14, gives the new perimeter, 29.