Question

A rectangle has an area of 120cm2. It's length and width are whole numbers.

What are the possibilities for the two numbers?

Wich possibility gives the smallest perimeter?

Answer 1

The two numbers can be any factors of 120. This includes: (1,120) (2,60)(3,40)(4,30)(5,24)(6,20)(8,15)(10,12) and the reverse of this. The smallest perimeter would be the two numbers that are closer together, which is 10 and 12.