Question
A rectangle field has an area of 300 square meters and a perimeter of 80 meters. What are the length and width of the field?
I really need help I don't know the answer.
I really need help I don't know the answer.
Answers
Ms. Sue
Factors of 300 include 30 by 10.
Would those dimensions give you a perimeter of 80?
Would those dimensions give you a perimeter of 80?
Damon
2 L + 2 w = 80 or L + w = 40
L w = 300 so w = 300/L
so
L + 300/L = 40
L^2 - 40 L + 300 = 0
(L-30)(L-10) = 0
try
L = 30 and w = 10
L w = 300 so w = 300/L
so
L + 300/L = 40
L^2 - 40 L + 300 = 0
(L-30)(L-10) = 0
try
L = 30 and w = 10