Hi aspirant,
This is a very simple question which can be solved by applying basic fundamental of mathematics. Let the breadth of rectangle be b meters so according to the question the length would be 2b-8. Now the perimeter of of rectangle is given and as we know the formula of of perimeter is 2(l+b).
Therefore 2(b+2b-8)=56
6b-16= 56
6b= 72
b= 12
Show the breadth of rectangle is 12 m and length would be 16 meters.
Hope it helps!
Dear student,
Given perimeter = 56m
First you need to read the problem and form equations accordingly.
So let breadth be x then length will be according to question 2x-8.
Formula for the perimeter of rectangle = 2(l+b)
=2(2x-8+x) which is equal to 56.
Then 6x-16=56
= 6x=72
Value of x will be 12.
Question : The area of a square and rectangle are equal. The length of the rectangle is greater than the length of a side of the square by 10 cm and the breadth is less than 5 cm. The perimeter (in cm) of the rectangle is:
Option 1: 50
Option 2: 40
Option 3: 80
Option 4: 100
Question : The perimeter of a square is half the perimeter of a rectangle. The perimeter of the square is 40 m. If its breadth is two-thirds of its length, then what is the area (in m2) of the rectangle?
Option 1: 384
Option 2: 196
Option 3: 321
Option 4: 400
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile