A rectangular park 60 m long and 40 m wide has concrete crossroads running in the middle of the park and rest of the park has been used as a lawn. If the area of the lawn is 2109 sq.m, then what is the width of the road.
a) 2.91 m
b) 3m
c) 5.82 m
d) none

• 3m
  area of the crossroad=(60*40)-2109 = 291m^2
  let the width of crossroad be b
  (60*b)+(40*b)-b^2=291
  solving the quadratic equation by Sridharachayya's method, we get
  b=3m
• 11 years agoHelpfull: Yes(23) No(11)
• d)none
  becoz 60*40=2400
  2400-2109=291
  now the length is same as wellas road so
  60*x=291
  x=4.85
  
• 11 years agoHelpfull: Yes(3) No(1)
• what is sridharachayya's method?
• 11 years agoHelpfull: Yes(1) No(0)
• @ MADHAVI & KARTHIK
  Shridhar Acharya's formula is a popular root finding formula in mathematics.
  If an equation can be represented as follows:
  ax^2 + bx + c = 0,
  then the roots will be x = (-b + -(b^2 - 4ac)^1/2)/2a
• 11 years agoHelpfull: Yes(1) No(0)
• what is sridharachayy's method?
• 11 years agoHelpfull: Yes(0) No(0)