Square 1 to 20
Square root 1 – 20 is the list of squares of all the numbers from 1 t0 20. The mathematics value of squares from 1 – 20 covers from 1 to 400. Determining these values will assist students to solve timetaking questions immediately The square root 1 to 20 in the exponential form is shown as x ki power of 2.
Square 1 to 20:
 Exponent form: x ki power of 2 or (x)^{2}
 Highest Value: 20^{2} = 400
 Lowest Value: 1^{2} = 1
Here are the given below the list of square 1 to 20:
Squares from 1 – 20 

1^{2} = 1  2^{2} = 4 
3^{2} = 9  4^{2} = 16 
5^{2} = 25  6^{2} = 36 
7^{2} = 49  8^{2} = 64 
9^{2} = 81  10^{2} = 100 
11^{2} = 121  12^{2} = 144 
13^{2} = 169  14^{2} = 196 
15^{2} = 225  16^{2} = 256 
17^{2} = 289  18^{2} = 324 
19^{2} = 361  20^{2} = 400 
Squares 1 to 20 Chart
Here is the squares 1 to 20 Chart:
Examples on Square 1 to 20
Example #1: If a circular tabletop has a radius of 8 inches. Calculate the area of the tabletop in sq. inches?
Solution:
Area of circular tabletop(A) = πr^{2} = π (8)^{2}
Using values from square 1 to 20 chart;
i.e. A = 8 x 8 x π = 64π
As we know pi(π)= 3.14
Therefore, the area of the tabletop = 200.96 inches^{2}.
Example 2: Calculate the area of a square window whose side length is 15 inches
Solution:
Area of square window (A) = Side^{2}
A = 15^{2} = 15 x 15 = 225
S0, the area of a square window is 225 inches^{2}.