Question

find the cost of fencing a rectangular field of dimension 46m by 24m at the rate of rs 3 per metre.Find the cost of leveling the field at the the rate of rs 6 per sq.m.

Answer 1

the cost of fencing rectangular field= rate x perimeter of field
=3 x 2 (46+24)
=3 x 2 x 70=420 Rs

the cost of levelling the field =rate by which field levelling x area of field
=6 x 46 x 24 =6624 Rs

Answer 2

Length of the field = 46 m
Breadth of the field = 24 m

Perimeter = 2 x ( length + breadth)
= 2 x ( 46 + 24)
= 2 x 70
= 140 m
Cost of fencing the field = 3 x 140 = Rs 420

Now area of the field = 46 x 24 = 1104 m²
Cost of levelling the field = 1104 x 6 = Rs 6624