The length of DE=sqrt((1-4)^2+(4-0)^2)=sqrt(3^2+4^2)=5
In principle, a rhombus has four equal sides, so the perimeter is 4*5=20 (units)
However, to ensure there is no typo, it is advisable to calculate separately the length of each and every side.
Answer:
it is not equal 35
Step-by-step explanation:
it is not eaqual to 35
X must be 4.
I uploaded the photo as an answer
Answer: 17
21-4=17
4+17=21
21+17=38 and so on..