Question

A road is 7 m wide surrounds a circular park whose circumfrence is 88m. Find the cost of paving road at the rate of Rs 60 per meter

Answer 1

given wide =7

circumference=88

so
2pir=88
2×22÷7×r=88
44÷7×r=88
r=88×7÷44
r=14
wide is 7
therfore area of field=7×7
=49
therfore cost=pi r square×area of field×rs 60
22÷7×14×14+49×60

therfore cost=rs3556

Answer 2

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