Question

Length = 16cm less than twice breadth. If perimeter= 100cm find lenght and breadth

Answer 1

there fore2 let the breadth be x

so length is 2x-16

so perimeter is=2l+2b

100=2(x+2x-16)

50=3x-16

66=3X

x=22

breadth is 22 cm

length is 28

Answer 2

Let  breadth be = x

Given, perimeter = 100

ATP,

Breadth=2x and length = 2x-16

perimeter= 2(l+b)

=>2(2x-16+2x) = 100

=> 2(4x-16) = 100

=> 8x - 32= 100

=> 8x = 100+32

=> 8x= 132

=> x = 132/8

=> x = 33/2

Now by putting the value of 'x' in 2x, we can get breadth and length.

Breadth = 2x

=2*33/2

=33 cm Ans         and

Length = 2x-16

= (2*33/2) -16

=33-16

= 17 cm Ans