In the given figure, the shape of the top of a table is that of a sector of a circle with centre O
Channel: Doubtnut
Date: 2020-04-19

In the given figure, the shape of the top of a table is that of a sector of a circle with centre O and `/_AOB=90^(@)`. If `AO=OB=42cm` then find the perimeter of the top of the table.