Following are the calculation of the area and perimeter of the given poster:
Given:
Length of poster=3 inches
The width of the poster is 4 times wide as the length.
To find:
area=?
perimeter=?
Solution:
Length=\(\bold{3 \ inches}\)
Width=\(\bold{4 \times 3 = 12\ inches}\)
Using formula:
\(\bold{Area= length \times width} \\\\\bold{perimeter= 2(length+width)}\)
Following are the calculation of the area and perimeter:
Area\(=\bold{ 3\times 12 = 36 \ inches^2}\)
Perimeter \(=\bold{ 2(3+12)= 2(15)=30 \ inches}\)
Therefore the answer is "36 and 30".
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