Which of the following is a sum of cubes? A. 8x^3 -27y^6
B. 3x^3 +8y^6
C. X^3 +8y^6
D. 125x^6 -9y^3

The area of the new square=324 in²

Step-by-step explanation:

The area of a square can be expressed as;

A=L×L

where;

A=area of the square

And since the sides of a square are equal, they can be expressed as;

L=length of one side

L=length of the other side

In our case;

L=unknown

A=81 in²

replacing;

81=L²

√L²=√81

L=9

Multiply side length by 2

9×2=18 inches

The new area can be expressed as;

A=18²=324 in²

The area of the new square=324 in²