Question

find the length of rope needed to fence a boundary of size 15cm length and 12cm breadth​

Answer 1

Answer:

Step-by-step explanation:

Perimeter= 2(l+b)

Perimeter= 2(15+12) cm

Perimeter= 2(27) cm

Perimeter= 54 cm

Answer 2

Answer: 54 cm

Step-by-step explanation:

$\Large\bf Given:-$

• Length of the boundary = 15 cm

• Breadth = 12 cm

$\Large \bf To\:Find:-$

• Length of rope

$\Large \bf Solution:-$

Length of rope needed for fencing the boundary = Perimeter of the boundary

Length of the boundary = 15 cm

Breadth = 12 cm

As we know,

$\boxed{Perimeter \:of \:a\: rectangle = 2(l+b)}$

Now, substituting values in the above formula;

Perimeter = 2(15+12)

= 54 cm

$\implies \bf Length \:of\:rope\:needed=54\:cm$

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$\Large \bf Know\:More:-$

• Area of a rectangle = l×b

• Perimeter of a square = 4×side

• Area of a square = (side)²