Question

the length of a rectangle is 4cm more than its breadth.the perimeter of the rectangle is 40cm.find the length and breadth of the rectangle​

Answer 1

Answer:

Breadth = 8cm

Length = 12 cm.

Step-by-step explanation:

Given-

• Breadth= x
• Length= 4+x
• Perimeter = 40 cm.

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Solution-

$\color{black}\boxed{\colorbox{saffron}{Perimeter-2(length+breadth) }}$

$40 = 2(x + 4 + x) \\ \\ = 40 = 2(2x + 4) \\ \\ 40 = 4x + 8 \\ \\ 40 - 8 = 4x \\ \\ 32 = 4x \\ \\ \frac{32}{4} = x \\ \\ 8 = x$

So breadth=8cm

Length =8+4= 12cm.