Question

the length of a rectangle is twice its breadth. if its perimeter is 60 cm. find the value of length and breadth

Answer 1

Answer:

Perimeter of rectangle = 2 (l+ b)=60 cm

Step-by-step explanation:

let the length =x

then , breadth = 2x

Now perimeter = 2 (l+ b)

60 =2 (x+2x)

60 = 2 ( 3x)

60 = 6x

x = 10

therefore , length = x=10 cm

breadth = 2x = 20cm

Answer 2

Answer:

LENGTH = 20

BREADTH = 10

Step-by-step explanation:

breadth = B

length = 2B

perimeter = 2(length + breadth)

[SUBSTITUTE THE VALUES]

60 = 2(B+2B)

60/2 = 3B

30 = 3B

B = 30/3

B = 10

breadth = 10

length = 2 * breadth = 2*10 = 20