Question

find the length and breadth of the rectangle if the peremetre is 72 length is 5x+4 and breadth is x-4​

Answer 1

Answer:

length = 5x+4t

breadth = x-4​

perimeter = 72

Perimeter of rectangle = 2(l+b)

72 = 2( 5x+4 + x-4 )

72 = 12x

x = 72/12

x = 6

Hence,

Length = 5x+4 = 5×6+4 = 34

Breadth = x-4 = 6-4 = 2

Answer 2

Answer:

Length = 34 units

Breadth = 2 units

Step-by-step explanation:

Perimeter of rectangle = 2(L + B)

Here,

Perimeter = 72

L = 5x + 4

B = x - 4

Therefore,

=> 2(5x + 4 + x - 4) = 72

=> 2(6x) = 72

=> 12x = 72

=> x = 72/12

=> x = 6

So,

L = 5x + 4 = 5(6) + 4 = 30 + 4 = 34 units

B = x - 4 = 6 - 4 = 2 units