Question

the perimeter of a rectangle is 40 cm and the ratio of its length and breathis 3:2 find length​

Answer 1

Answer:

Let the length be 3x and breadth be 2x.

Perimeter of rectangle = 2(l+b)

40 = 2(3x+2x)

20 = 5x

x= 4

Now,

Length = 3x = 3×4 = 12cm

Hope it helps u....

Mark as brainliest plz ❣️

Answer 2

Answer:

ratio of length and breadth =3:2( given) let ratio be 3x and 2x

perimeter of rectangle =2(length+bradth)

but perimeter =40cm(given)

perimeter =2(l+b)

40=2(3x+2x)

40/2=5x

20=5x

x=4

now length =3x=3*4=12cm

breadth =2x=2*4=8cm