A rectangle has a perimeter of 24 centimetres, and its length is exactly twice its width. Select all the statements that are true about this rectangle.

Explication

Half the perimeter is 12 cm and holds one width plus one length, so with the length twice the width those 12 split into 4 and 8. Treating the half-perimeter of 12 cm as the length and halving it for the width produces 6 and 12, a pair whose perimeter would come to 36 cm.