Question

The radius of circular park is 70 meters there is a 7m road outside it find the cost of levelling the road @ Rupees 2.30metersquare

Answer 1

$hey \: mate \: here \: is \: ur \: answer \\ area \: of \: park = \pi \: r \: r \\ 22 \div 7 \times 70 \times 70 \\ 15400 {cm}^{2} \\ area \: of \: whole \: area = \pi {r}^{2} \\ 22 \div 7 \times 77 \times 77 \\ 18634 {cm}^{2} \\ the \: area \: of \: road \: = 18634 - 15400 \\ 3234 {cm}^{2} \\ please \: mark \: as \: brainliest$