Question

A path 1m wide is built along the border and inside a square of side 20 m. the cost of cementing the path at athe rate of Rs 20 per sq. m. is​

Answer 1

Answer:

your answer is Rs 1680

Step-by-step explanation:

given:

side of a square = 20 m

a path is along the border of the square 1 m wide

so side of external square = 20+1+1

= 22 m

area of path = area of external square - area of internal square

= side × side - side × side

=( 22 × 22 ) - ( 20 × 20 )

= 484 - 400 m

=84 meter square

rate of cenenting 1 meter square = RS 20

rate of cenenting 84 meter square = 84 × 20

= Rs 1680

so rate of cenenting the path is RS 1680