Answer:
14 meters and 10 meters
Explanation:
140 square meter for the area.
The 140 i a multiple of the width and the length. The possibilities are:
2 and 70 , 2*2 + 70*2 = 144 no
4 and 35 , 4*2 + 35*2 = 78 no
5 and 28, 5*2 + 28*2 = 66 no
7 and 20, 7*2 +20*2 = 54 no
14 and 10, 14*2 + 10*2= 48 YES