Question

the perimeter of a rectangle is 42cm and length is 3cm less than 3 times of its breadth ,find the dimension of the rectangle ​

Answer 1

Answer:

L= 15

B = 6

Step-by-step explanation:

Perimeter = 2(L+B)= 42

Now L = 3B -3 this condition is given in question that L is 3 less than 3 times B.

put the value of L in perimeter equation

42 = 2(3B- 3 +B)

42 = 8B - 6

B= 6

L = 3B - 3

= 15