Statisticians use summary measures to describe the amount of variability or spread in a set of data. The most common measures of variability are the range, theinterquartile<span> range (</span>IQR<span>), </span>variance<span>, and standard deviation. This is from google btw</span>
Ay^2+2ay-3a
a(y^2+2y-3)
a(y-1)(y+3)
A=3.14r^2
A=3.14 x 10^2
A=3.14x100
A=314
314cm is your answer
