9. A pyramid has a square base with an area
1 answer:
<em>48 ft</em>
- Step-by-step explanation:
<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>
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