C
Due to the fact that it is starting from 0 and moving in a steady pattern
7x / 8 = 21
7x = 8*21
x = 24
Answer: the others are 5cm and 8cm
Step-by-step explanation:
this is because a rhombus is the same as a rectangle or square and they have equal two sides
The answer is 2.5 because you need to divide it and then you get your answer