The difference between the length and width of a rectangle is 6cm and the area is 135cm2. What is the length?
-
A.
25cm -
B.
18cm -
C.
15cm -
D.
24cm -
E.
27cm
Correct Answer: Option C
Explanation
Area = L x B
L – B = 6
L = 6 + B
area = 135
B(6 + B) = B2 + 6B – 135 = 0
B = 9
L = 6 + 9
= 15