Question

17. Two crossroads each 2 m wide run at right angles through the centre of a rectangular
field 90 m by 70 m such that each is parallel to one of the sides of the rectangle. Find
the total cost of covering the crossroads with red gravel at 60 per square metre and
putting grass at the remaining portion of the field at * 50 per square metre.​

Answer 1

Answer

Area of a rectangular park =l×b=64×38=2432m

2

Area of a horizontal road =l×b=64×2=128m

2

Area of a vertical road =l×b=38×2=76m

2

Common area =2×2=4m

2

Area of the roads =204−4=200m

2

Area of the remaining part of the park =2432−200=2232m