Answer :
The area of the two lawns will be 105 square meters.
According to the question,
We have the following information:
The first lawn is 7 meters long and 4 meters wide. The second lawn has the same length and width which is 3 times as much as the first one.
So, the width of the second lawn = 4×3
Width of second lawn = 12 m
Now, the formula to find the area of the rectangle:
Length*width
Area of first lawn:
7×3
21 square meters
Area of second lawn:
7×12
84 square meters
Now, the area of two lawns = area of first lawn+ area of second lawn
Area = 21+84
Area = 105 square meters
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