Math, asked by aliansari01859, 18 days ago

The length of a rectangle is twice its breadth. what is the length if the perimeter is 90 cm

Answers

Answered by itzmedipayan2
3

Answer:

Let breadth be x metres

Length be 2x metres

Perimeter of rectangle = 2( L + B )

90 = 2( 2x + x )

 =  \frac{90}{2}  = 3x \\  \\  \frac{45}{3}  = x \\  \\ x = 30 \\  \\ 2x = 15

So

Length is 30cm and breadth ia 15cm

Hope it helps you from my side

Answered by fahims8080
0

Answer:

Length is 30 cm

Step-by-step explanation:

According to the information provided in the question it is given as

Length = 2 x

Perimeter = P = 90 cm

We need to find the length

Let us assume  breadth= x meter

Length be 2 x metres (As given in question )

Now applying formula of perimeter of rectangle

Perimeter of rectangle = 2( L + B )

Putting the values we get answer

90=2(2x+x)

90=2(3x)

90=6x\\x=\frac{90}{6} \\x=15

Length = 2 x =

            =2* 15

           =30 cm

Length is 30 cm

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