Answer:
147 meter squared
Step-by-step explanation:
Assuming that by the definition of a rectangle, two sides share the same length, we can assume that two sides of the rectangle have sides of 7 meters. This means that the two remaining sides had a length of 42 meters combined. Divided between the two sides, this means that one pair of the sides is 42 meters, so 21 meters a side. Combing all of this information, we know the rectangle is 21 by 7 meters. To find the area, all you need to do is multiply the length times the width, so 7 times 21, which is 147 meters squared.
Hope this helps!
