Question

which of the following is a perfect square?
a)0.09 b)8.1 c)0.025 d) all
answer with explanation.​

Answer 1

(1) Firstly the answer is (a) ...

How (◠‿◕(｡◕‿◕｡)➜

If we square 0.3

i e 0.3*0.3

then answer will be 0.09 ...And its perfect square...

(b) and (c) are wrong because

if u square 2.9

i.e 2.9*2.9 then

answer will be 8.41 not 8.1 hence its wrong

or if u square 0.5

then

answer will be 0.25 not 0.025

Hence its not perfect square....

So above all shows (a) is correct..

Answer 2

Answer:

0.09 is the perfect square of 0.3 .

Step-by-step explanation:

a) 0.09 = √0.09 = 0.3

so it is a perfect square.

b) 8.1 = √8.1 = 2.8460

it is not perfect square becz it is in the form of decimal.

c) 0.025 = √0.025 =0.15811

it is also not a perfect square . But it may be the perfect square if the question is 0.25 . It's root = √0.25=0.5

So, only a is the correct answer of this question.

Hope it's helpful for u.

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