The difference between the length and width of a rectangle is 6cm and the area is 135cm2. What is the length?
- 25cm
- 18cm
-
15cm
- 24cm
- 27cm
The correct answer is: 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