Answer:

Step-by-step explanation:
We have to find out the area of the square in order to find how many square inches were cut from the squared cloth.
Diameter = 42 in.
Radius = D / 2 = 42 / 2 = 21 in.
Area of circle = πr²
Where r = 21 in.
Area = (3.14)(21)²
Area = (3.14)(441)
Area of the circle = 1385.4 in.²
![\rule[225]{225}{2}](https://tex.z-dn.net/?f=%5Crule%5B225%5D%7B225%7D%7B2%7D)
Hope this helped!
<h3>~AH1807</h3>
Answer:
18
Step-by-step explanation:
Apply lg on both sides.
lg7^x^2 = lg9^x
Bring the power forward.
x^2lg7 = xlg9
x^2/x = lg9/lg7
x = lg9/lg7 = 1.13