A rectangular noticeboard measures 250 centimetres by 150 centimetres. Select all the statements that are true about the distance right round its edge.

الشرح

Adding 250 and 150 and doubling the total gives the way round in the smaller unit, and that total is then shared into hundreds because it is a distance rather than a surface. Applying the ten-thousand step meant for areas would shrink a board wider than a person down to eight centimetres.