A school play ground is rectangular in shape with length 80 m and breadth 60 m.A cemented pathway running all around it on its outside of width 2 m is built.Find the cost of cementing if the rate of cementing 1 sq. m is $20.

A school play ground is rectangular in shape with length 80 m and brea

1.	A school play ground is rectangular in shape with length 80 m and breadth 60 m.A cemented pathway running all around it on its outside of width 2 m is built.Find the cost of cementing if the rate of cementing 1 sq. m is $20.
Answer» AREA OF PLAYGROUND = 8060=4800Now, According to question cemented pathway outside ittherefore, LENGTH WILL BE= 80+2+2=84 BREADTH WILL BE =60+2+2=64Now AREA OF PATH INCLUDING PLAYGROUND=8464=5376hence area of cemented path only = 5376-4800=576cost of cementing =576*20=11520