Answer:
11
Step-by-step explanation:
just do it
The surface area of that pyramid is 192 cm^2
12p+7>139 Start
12p>132 Subtract 7
p>11 Divide 12
You wrote it there yourself, at the beginning of your question.
You wrote E = I x R
Divide each side by ' I ' : E / I = R
That's what you're asking for. ^