Question

The perimeter of rectangle is 1 meter. It's breadth is 20cm. What is it's length


me tho bahut acchi hu aap kaise ho kutta, kamina xD​

Answer 1

Answer:

Length = 300 c.m.

Explanation:

perimeter of rectangle is 1 meter.

1 meter = 100 c.m.

breadth = 20cm.

perimeter of rectangle = 2( L + B )

= 2( L + 20 cm.) = 100 c.m.

2L +40 = 100 c.m.

2L = 100 cm. - 40 c.m.

2L = 60 c.m.

L = 30 c.m.

Length = 300 c.m.

Answer 2

Answer:

perimeter of rectangle =1m = 100 cm

breadth= 20 cm

length= ?

we know that,

perimeter of rectangle = 2(l+b)

so,

100= 2(l+b)

100= 2(l+20)

100/2=l+20

50-20=l

30=l

so length of rectangle is 30cm