A rectangle has sides 4 cm and 25 cm What is the side of a square that has the same area as the rectangle?

1. If we know both sides of the rectangle, then we can easily calculate its area. The sides of the rectangle are 4 cm and 25 cm long, which means that by finding the product of these two values, we will know the area. Let’s calculate:
4 * 25 = 100 cm ^ 2.
2. If the area of the square is equal to the area of the rectangle, then it is also 100 cm ^ 2.
3. And in order to find out what the length of the side of a square is, we just need to extract the square root of its area. Find the side of the square.
The square root of 100 = 10 cm.
Answer: The side of the square is 10 cm.