Question

a path 1 m wide is build along the border inside a square park o side 30m. find the cost of covering the remaining portion of park by grass at rate of rupees 2 per sq.m
please tell the steps

Answer 1

Given- Value of side of square and cost of covering

To find- cost of covering remaining portion

Solution-

Formula for Area of square= a^2

So, side of a square = 30m

total side of square including border= 30+1 =31

Area of square including border= 31^2 =961 sq. m

cost of covering extra square = 961*2 = 1922 rs.