Question

Q.4 The length and breadth of a rectangle are in the ratio 3:1
and
its perimeter is 48 cm. Find length and breadth of
rectangle.​

Answer 1

length=3x

bredth=x

p=2*(l+b)=2*(3x+x)

48=2*(4x)

48=8x

x=48/8

x=6

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Answer 2

Answer :

We have,

• The length and breadth of a rectangle in the ratio 3:1
• The perimater is 48 cm.

To do,

• Find the length and breadth of
• rectangle.

Step by Step Explanation :

Let

• The length be 3x
• The breadth be 1x

Formula for perimeter of Rectangle

$\large{\boxed{\sf{Perimeter\; of \;Rectangle= 2( l + b )}}}$

Put values in formula,

${\sf{Perimeter\; of \;Rectangle= 2( l + b )}}$

${\sf{48= 2( 3x + 1x )}}$

${\sf{48= 2( 4x )}}$

${\sf{48= 8x }}$

${\sf{\cancel{\dfrac{48}{8}}= x }}$

6 = x

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Measure of the sides :-

Length

• 3x = 3 × 6 = 18
• 1x = 6

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