3. Which of the following is the correct chronological order of rulers

1.Mohammed bin Tughlaq , Ghiasuddin Tughlaq , Firoz shah
Tughlaq
2.Firoz shah Tughlaq,Mohammed bin tughlaq, Ghiasuddin
Tughlaq
3.Ghiasuddin Tughlaq,Firoz shah Tughlaq, Mohammed Bin
tughlaq,
4 Ghiasuddin Tughlaq,Mohammed bin Tughlaq, Firoz shah
Tughlaq

4. A path 7m wide surrounds a circular lawn whose diameter is 252m find the area of the path?

Area of path = π(R-r)(R+r)

Radius inner circle = 126 (252/2)
Radius outer circle = 126+7 = 133

Therefore,

Area of path = 22/7(133-126)(133+126)

= 22/7(7)(259)

= 22/7(1813)

= 39886/7 = 5698 Sq.cm