The weight WKG of metal bar varies jointly as its length L meters and the square of its diameter D meters if W is equal to 140 when D is equal to 4 whole number 2/3 and L is equal to 54,find Din terms of W and L​

Idon’t know actually i’m in 5th grade and don’t know

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.