# math

posted by .

find the length of a side of a square whose area is 400 cm^2

• math -

Area equals length times width. A square has equal length sides so the answer is a number times itself that comes out to 400. 20 x 20 = 400. The length of each side is 20cm.

• math -

69

## Similar Questions

1. ### factoring

if the length of one side of a square is 1/2h, find the representation of the area. If a side of a square is s, the area is s squared. area of square is (length of side)^2. Substitute 1/2h for (length of side) and go from there.
2. ### math

The length of a rectangle is 2 times its width and its perimeter is 42 cm. A ssquare is formed by putting together 2 rectangles like this. Find the length and width of the edge and the area of this square. "A ssquare is formed by putting …
3. ### pre-cal

Find the area of a square whose side length is 1/4 the value of its area
4. ### geometry

Find the length of a side of a square whose perimeter and area have the same value. help?
5. ### Algebra 1

You are designing a wall mural that will be composed of squares of different sizes. One of the requirements of your design is that the side length of each square is itself a perfect square. 1. If you represent the side length of a …
6. ### Analytic Geometry

A square is a quadrilateral with four equal sides. The area of a square is equal to square of its sides. The diagonal of a square is a line segment joining any two non-consecutive side. Find the area of a square and the length of its …
7. ### Algebra 2

Solving By Factoring: The length of the side of a large square is 1 cm less than twice the length of the of the side of a smaller square. The area of the large square is 33cm^2 more than the area of the small square. Find the length …
8. ### college algebra2

the area of a quadrilateral is 200 square feet and its longest side is 20 feet long. find the length of the longest side of a similar polygon whose area is 400 square feet.
9. ### Math

Find the area of a rectangle whose length is more than its width and the width is equal to the side of a square whose area is 144.
10. ### geometry

square 1 has a side length of x, and square 2 has a side length of y. Square 2 is formed by joining the midpoints of the sides of square 1 in order. If x=2, find the ratio of the are of square 1 to the area of square 2

More Similar Questions