What is the answer and how you get answer

Answer:
D) 70 m²
Step-by-step explanation:
1. Find the base and height:
Since, for each grid, the side length is 2 meters, we multiply the lengths by 2 meters: 9 - 2 = 7 -> 7*2 m = 14 m; 7 - 2 = 5 -> 5*2 m = 10 m
2. Find the area:
Use the equation: 1/2*b*h ->
1/2 * 14 m * 10 m = 140/2 m² = 70 m².