Erin is squaring numbers.
she says that it is possible to get an answer that is smaller than the number she started with.
show that erin is correct.

If you square a number that is less than 1.

For example, say your number was 1/2
the square of 1/2 is (1/2)^2 = (1/2)(1/2) = 1/4

For example 1/2 or 0.5.
0,5 x 0.5 is 0.25.  because 1/2 of a 1/2 is 1/4 or 0.25 because that is the same like 0.5 and 1/2. 
It works the same way as 2 squared = 4 but with getting smaller because it is less than 1.

Answer: d. 39 cmin the diagram, the approximate length of the minor arc de is 39 centimetres.step-by-step explanation: the formula for the length of an arc in a circle is as displayed below.let the length of the minor arc de = xx = 2( pi )r × angle of sector / 360°from this, we will substitute the values given from the problem into the formula to obtain the length of the minor arc de.x = 2( pi )r × angle of sector / 360°r = radius = 25cmpi as an approximate value = 3.14angle of sector = 120°x = 2( 3.14 )( 25 ) × 120° / 360°x = 157 × 1 / 4x = 39.25x = 39 ( rounded to the nearest whole number as an approximate value )