12cm
28cm
It is: 4*2 = 8 square cm
Of the items on the given list, 4cm is the biggest.
5cm 2cm
12cm
Square side 3cm. Rectangle 2cm x 4cm. Equilateral triangle side 4cm.
A rectangle that is 2cm by 4cm has an area of 8cm. It also has a perimeter of 12cm.
28cm
30cm
22 cm
32 cm
It is: 4*2 = 8 square cm
It depends what units you use for each side ! A 1cm x 15cm rectangle has a perimeter of 16cm. So does a 2cm x 4cm one ! If you start using millimetres, there are many more possibilities !
Since all four sides are equal in a square, a square with an area of 4cm2 must be 2cm on each side. Therefore, the perimeter is 2cm x 4 = 8cm.
3cm + 4cm + 3cm + 4cm = 14 cm
It is: 2+15+2+15 = 34cm