यदि \(a=\sqrt{45}\) और \(b=\sqrt{20}\) तो (ab) क्या है?

If \(a=\sqrt{45}\) and \(b=\sqrt{20}\), what is (ab)?

Author: Muft Shiksha Editorial Team Published:
Explanation opens after your attempt
Correct Answer

C. 30

Step 1

Concept

\(\sqrt{45\times20}=\sqrt{900}=30\).

Step 2

Why this answer is correct

The correct answer is C. 30. \(\sqrt{45\times20}=\sqrt{900}=30\).

Step 3

Exam Tip

\(\sqrt{45\times20}=\sqrt{900}=30\)।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a=\sqrt{45}\) और \(b=\sqrt{20}\) तो (ab) क्या है? / If \(a=\sqrt{45}\) and \(b=\sqrt{20}\), what is (ab)?

Correct Answer: C. 30. Explanation: \(\sqrt{45\times20}=\sqrt{900}=30\)। / \(\sqrt{45\times20}=\sqrt{900}=30\).

Which concept should I revise for this Mathematics MCQ?

\(\sqrt{45\times20}=\sqrt{900}=30\).

What exam hint can help solve this Mathematics question?

\(\sqrt{45\times20}=\sqrt{900}=30\)।