A rectangle with an area of 120 i n^2 has a length 8 inches longer than two times its width. What is the width of the rectangle?
1 Answer
Jul 1, 2016
Explanation:
Area of a rectangle with length, l and breadth, b =
Given
Area A =
2b^2 + 8b - 120 = 0 =>
b^2 + 4b - 60 = 0 =>
b^2 + 10b - 6b - 60 = 0 =>
b(b+10) -6 (b+10) = 0 =>
(b-6)(b+10) = 0 ; =>b = 6 asb cannot be-10 .
Width is