A rhombus has a perimeter of 40 cm and a height of 8 cm. What is the length of each side?

Perimeter of rhombus:

P=4a

a=leght of side

P=4a

40=4a Divide with 4

10=a

a=10 cm

Area of rhombus:

A=a*h

h=height

A=10*8=80cm^2