Question

Length 5x +4 breadthx-4
Length of a rectangle exceeds its breadth by 4 m. If the perimeter of the rectangle is 84 m,
find its length and breadth.

Answer 1

Answer:

Length = 21 m,  Breadth = 17 m

Step-by-step explanation:

Let the breadth be x m.

∴ length = x+4 m

Perimeter of the rectangle = 84 m

2(l+b) = 84 m

2(x+x+4) m = 84 m

2(2x+4) m = 84 m

2x + 4 m = $\frac{84 m}{2 m}$

2x + 4 = 42

2x = 42 - 4

2x = 38

x = 17

∴ Length = 17 + 4 = 21 m

∴ Breadth = 17 m

Answer 2

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