Question

The sides of a rectangle are in the ratio 2:3 and its perimeter is 20 cm. Find the sides of rect-
angle.
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Answer 1

Answer:

Suppose that k is constant

Side ratio=2/3=2k/3k=length/breadth

Then, length=2k, breadth=3k

Perimeter of rectangle=20cm

2(l+b)=20cm

2(2k+3k)=20cm

2×5k=20cm

5k=20/2=10cm

k=10/5=2cm

Now, length of rectangle=2k=2×2cm=4cm

breadth of rectangle=3k=3×2cm=6cm.

Step-by-step explanation:

Answer 2

Step-by-step explanation:

Let the sides of a rectangle be 2x & 3x

A/q,

Perimeter of rectangle = 20cm

2( l+b ) = 20cm

2( 2x + 3x ) = 20

2x + 3x = 10

5x = 10

X = 2cm

Length of rectangle = 3x = 6cm

Breadth of rectangle = 2x = 4cm

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