Question

Rahul owns a rectangular field of length 400m metre and the breadth 200 metres square field of length 300 metre find the cost of fencing the field at 150 per metre if one tree can be planted in area of 10 square metres who can plant more trees in his fieldhow many more trees can be plant​

Answer 1

perimeter of rect. field = 2( l + b )

= 2 (400 + 200 )

=2 x 600

= 1200 cm

cost = 1200 x 150

= 180000 Rs.

perimeter of square field = 4 x s

= 4 x 300

= 1200 cm

cost = 1200 x 150

= 180000 Rs.

cost for fencing is same in both the fields

area of rect. field = lb

= 400 x 200

= 80000 cm^2

no. of trees that can be planted in it = 80000/10

= 8000 trees

area of square field = s x s

= 300 x 300

= 90000 cm^2

no. of trees that can be planted in it = 90000/10

=9000 trees

hence 1000 trees more can be planted in the square field