Question

6] The length of a rectangle is twice its
breadth. The perimeter of the rectangle is
30m. Find the length & the breadth.
*
O (a) Length = 10m , Breadth = 5m
O (b) Length
(b) Length = 5m , Breadth = 10m
O (c) Length = 7m , Breadth = 5m
O (d) Length = 5m , Breadth = 3m​

Answer 1

Answer:

a) length-10m ,breadth-5m

Step-by-step explanation:

let length be 2x

let breadth be x

perimeter of rectangle =2(l+b)

30m = 2( 2x+x)

30=2(3x)

30=6x

x=30/6

x=5.

length=2(5) = 10m

breadth =5m

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Answer 2

Answer:

Option (a) Length = 10 m breadth = 5m

Step-by-step explanation:

Let breadth be x

length = 2x (given)

Perimeter = 2 (l + b)

30 m = 2 (2x + x)

30 m = 6x

x = 30 m/ 6

x = 5 m

putting the value of x in length and breadth:-

length = 2x

2 (5 m) = 10m

breadth =x

5m