Which option is the value of (\sqrt{0.36}+\sqrt{0.49})?
Answer and explanation
Correct answer: 1.3
\sqrt{0.36}=0.6 and \sqrt{0.49}=0.7, so the sum is 0.6+0.7 = 1.3. Option C (1.1) is a tempting close distractor but incorrect because \sqrt{0.49} is 0.7, not 0.5. Exam tip: convert decimals to fractions (e.g. 0.36=(6/10)^2) or memorize common decimal square roots to simplify quickly.
Frequently asked questions
What is the correct answer to this question?
1.3
Why is this the correct answer?
\sqrt{0.36}=0.6 and \sqrt{0.49}=0.7, so the sum is 0.6+0.7 = 1.3. Option C (1.1) is a tempting close distractor but incorrect because \sqrt{0.49} is 0.7, not 0.5. Exam tip: convert decimals to fractions (e.g. 0.36=(6/10)^2) or memorize common decimal square roots to simplify quickly.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Polynomials. Topic: Irrational numbers and real numbers.
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