If the square root of 1,600 is 40, then what is 40 squared?  Choose the most appropriate option
A) 1,600
B) 16
C) 4
D) 440
E) 64,000
A number squared is a number multiplied by itself   Ex) 4 squared is 16 because 4*4= 
<gadget id="calculator">4*4</gadget>
<output>16</output>
16   The square root of a number is a number, that if squared, would equal the number you're trying to find the square root of.   Ex) What is the square root of 16? The square root of 16=4, so 4 squared equals 16   So to solve this equation you would do:   The square root of 1,600=40, so 40 squared equals 1,600   (1,600)
<result>A</result>
If the square root of 1,600 is 40, then what is 40 squared?