Why we muliply when we renove symbol of propartionality?
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A is proportional to B can indicate two things. 1) as A increases, B also increases 2) as A increases, B decreases
Each proportionality is termed as direct proportionality(ABAB is constant) and inverse proportionality(A×BA×B is constant) respectively. The increase and decrease is by a single factor. Like ππ
Perimeter(P) and diameter(d) of a circle are directly proportional(when diameter is stretched out, proportionally perimeter get stretched to preserve the circular shape) Ie, PαdPαd
Formula for perimeter is:
P=π∗dP=π∗d
See the proportionality sign is replaced by the constant π
Here is ur answer !
A is proportional to B can indicate two things. 1) as A increases, B also increases 2) as A increases, B decreases
Each proportionality is termed as direct proportionality(ABAB is constant) and inverse proportionality(A×BA×B is constant) respectively. The increase and decrease is by a single factor. Like ππ
Perimeter(P) and diameter(d) of a circle are directly proportional(when diameter is stretched out, proportionally perimeter get stretched to preserve the circular shape) Ie, PαdPαd
Formula for perimeter is:
P=π∗dP=π∗d
See the proportionality sign is replaced by the constant π
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