Question

find the breadth of the rectangle whose perimeter is 160 cm and whose length is :
a) 25 cm
b)60 cm
c)56.5 cm​

Answer 1

Step-by-step explanation:

a) p = 160

l = 25

p = 2(l+b)

= 2*25 + 2b = 160

= 50 + 2b =160

2b=160-50

   = 110

b= 110/2

  = 55

b) l=60

p=160 = 2*60 + 2b

=120+2b=160

2b=160-120 = 40

b=40/2=20

c) l = 56.5

p=160=2*56.5 +2b

113+2b=160

2b=160-113

   = 47

b=47/2 = 23.5