Answer:
it can be 6 or -6
Step-by-step explanation: we ca see that the answer is positive which means that the numbers which we will add is going to be positive so we can say x can be 6 or -6
<em>48 ft</em>
<em>A = 144ft² = l²</em>
<em>144 = l²</em>
<em>l = √144</em>
<em>l = 12 ft</em>
<em>P = 4l</em>
<em>= 4×12ft</em>
<em>= 48 ft</em>
