How would you solve this problem?
In a figure, two rectangles with the same dimensions overlap to form a shaded region (right angle triangle). If each rectangle alone has perimeter 12 and the shaded region has perimeter 3, what is the total length of the outside perimeter of the new shape?
A. 15
B. 18
C. 21
D. 22
E. 23
Answer is C
In a figure, two rectangles with the same dimensions overlap to form a shaded region (right angle triangle). If each rectangle alone has perimeter 12 and the shaded region has perimeter 3, what is the total length of the outside perimeter of the new shape?
A. 15
B. 18
C. 21
D. 22
E. 23
Answer is C
