The area of a square garden is A square feet and the perimeter is p feet. If a=2p+20, what is the perimeter of the garden, in feet?  Options:
A) 28 B) 36 C) 40 D) 56 E) 64
Perimeter of square = P   Side of square = P/4   Area of Square = (P^2)/16 =A   Given that A = 2P + 20   (P^2)/16 = 2P + 20   P^2 = 32P + 320   P^2 -32P -320 = 0   P^2 -40P +8P -320 = 0   P(P-40)+8(P+40) = 0   (P-40)(P+8) = 0   P = 40 or - 8   Discarding negative value , P = 40   Answer is 40
<result>C</result>
The area of a square garden is A square feet and the perimeter is p feet. If a=2p+20, what is the perimeter of the garden, in feet?