Calculate Area with D:d:p = 4:1:4

  • Context: High School 
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Discussion Overview

The discussion revolves around the calculation of an area using a specific equation involving variables D, d, and p, which are given in a ratio of 4:1:4. Participants seek clarification on the interpretation of this ratio and its implications for the calculation.

Discussion Character

  • Exploratory, Technical explanation

Main Points Raised

  • One participant expresses confusion regarding whether the values of D, d, and p represent numbers or proportions.
  • Another participant suggests that the relationship indicates a series proportion, where D and p are each 4 times the value of d.
  • A subsequent reply confirms this interpretation, stating that D equals 4d and P equals 4d.

Areas of Agreement / Disagreement

Participants appear to agree on the interpretation that D and p are proportional to d, specifically that D and p are each 4 times d. However, the initial confusion about the nature of the values remains unresolved.

Contextual Notes

The discussion does not clarify the specific numerical values for D, d, and p, nor does it address any assumptions that may affect the interpretation of the ratio.

hpla
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hey >>>

i want to Calculate this area Equation :

A= pi *(D^2*d^2)*p*n*k

n= 0.5
k=0.4

but the Valuable of ( D-d-p) given like this :

D:d:p
4 1 4

My question is :

i don't understand Valuable of ( D-d-p)

is it Number or proportion ... just can anyone make it clear to me

Please, Please, Please,
 
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It looks like a series proportion to me. D and p are each 4 times the value of d.
 
Thank you for your response .. u mean

D= 4d P=4d
 
Yes.
 

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