Question

Length and breath of rectangular field are ratio 9:5 if area of the field is 14580square meter find the cost of surroundin the field with a fence at the rate of 3.25rs per meter

Answer 1

length = 9x
breadth = 5x
area of rect. = lxb = 9x*5x = 14580
45x^2 = 14580
x^2 = 14580 / 45 = 324
x= 18
circumference = 2(l+b)
l = 18*9 = 162
b= 18*5 = 90
circumference = 2 * 252 = 504
total cost = 3.25 * 504 = 1638 rs

Answer 2

Area of rectangle =(l×b)

Step-by-step explanation:

= 9x × 5x =14580

=45x^2=14580

x^2=14580/45 =324

x=18

circle = 2(l+b)

l=18×9=162

b=18×5=90

circumference =2×252=504

total cost=3.25×504=1638 rs