Question

length is three times the breadth I am a rectangle perimeter is 40 cm and breadth is x ​

Answer 1

Answer:

Perimeter= 40cm

Let breadth be x

Let length be 3x

A.T.Q

Perimeter of a rectangle= 2 × ( l + b )

40 cm = 2 × ( 3x + x )

40 cm = 2 × 4x

40 cm = 8x

8x = 40 cm

$x = \frac{40cm}{8} \\ x = 5cm$

So, breadth = 5cm

Length = 5 cm× 3

= 15 cm

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Answer 2

Answer:

Step-by-step explanation:

Breadth=x

Length=3x

Perimeter of rectangle=2(l+b)

40=2(3x+x)

40=2(4x)

40 =8×

X=40/8

X=5

BREADTH=5

LENGTH=3×5=15