Answer:
b. 102 m²
Explanation:
In order to find the area of shape.
Let's separate it into three rectangle.
We know that
Area of rectangle: Length*breadth
Using this
Area of left rectangle=15*3=45 m²
Area of middle rectangle=4*(15-6-6)=12 m²
Area of right rectangle= 15*3=45m²
Now
Total Area of shape= 45m²+12m²+45m²=102m²