Question 251172
The perimeter is simply the sum of the four sides. In other words, just add up the four sides to get the perimeter. So {{{P=a+a+(a+7)+(a+7)=4a+14}}}. So the perimeter is {{{P=4a+14}}}



The area is the product of the two sides. This means that the area is the result of multiplying the two sides together. So {{{A=a(a+7)=a^2+7a}}} giving us the area of {{{A=a^2+7a}}}