A rectangular garden bed measures 4 metres by 2.5 metres. Enter the number of metres in its perimeter.
Ճիշտ պատասխան
13 · Ընդունվող չափման միավորներ: metres · m · meters
Բացատրություն
Two lengths and two widths give 4 plus 2.5 plus 4 plus 2.5, the amount of edging needed to run right round the bed. Entering 10 multiplies the two measurements together, and that product describes the ground covered rather than the border around it.