The difference between the length and breadth of a rectangle is 15 metres. If its perimeter is 210 metres, then what will be the area (in square metre) of rectangle?
Show answer & explanation
Correct answer: D
Explanation
Given:
Length − Width = 15
Perimeter = 210
According to the formula:
Perimeter = 2(Length + Width)
210 = 2(L + B)
⇒ L + B = 105
And L − B = 15
2L = 120 ⇒ L = 60
B = 105 − 60 = 45
Area = L × B = 60 × 45 = 2700 square meters