The area of the rectangle is 1000 m2, one side is 50 m2. Find the perimeter of the sides of the rectangle.

From the very beginning, let’s remember what formula is needed to calculate the area of a rectangle:
S = a * b,
where S is the area of the rectangle,
a – its length,
b is its width.
From the above formula, we can express the unknown second side of the rectangle (b):
b = S: a.
Now, using the formula we derived, we define the 2nd side:
b = 1000: 5O = 2O (m).
Knowing the lengths of both sides of the rectangle, we calculate its perimeter:
P = 2 * (a + b) = 2 * (5O + 2O) = 2 * 7O = 14O (m).
Answer: P = 14O m.