Question

3√243 is a rational

pls answer this question ?​

Answer 1

Answer:

No it's Irrational

Reason :-

3 is a Rational and root 243 is irrational

So when we add , substract , multiply or divide a Rational number to a Irrational Number we will always get Irrational .

3 × root 243 = Irrational

For solving more kind Question I will give you 3 formula please learn you will be pro in this type of Question

[ ♤ = All Operation (add , substract , multiply, divide ]

(i) Rational ♤ Rational = Rational

(ii) Irrational ♤ Irrational = Either Rational or Irrational

(iii) Rational ♤ Irrational = Irrational

Before using this first of all you have to identify which number is Rational or Irrational : )

Hope it helps to you!!

Answer 2

Answer:

3√243=3√(3 × 3 × 3) × 3 × 3

=3∛243

=6.240251469=6.24

Step-by-step explanation:

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