To solve the expression \( 20 \cdot \sqrt{49} \):

1. Calculate the square root of 49: 
   \[
   \sqrt{49} = 7
   \]

2. Multiply the result by 20:
   \[
   20 \cdot 7 = 140
   \]

Thus, \( 20 \cdot \sqrt{49} = 140 \).

Would you like more details or have any questions?

Here are five questions you might consider asking:
1. How do you simplify complex square root expressions?
2. What are some common mistakes when working with square roots?
3. Can you provide more examples of multiplying numbers by square roots?
4. How do you solve algebraic equations that include square roots?
5. What are the applications of square roots in real-life problems?

**Tip:** When dealing with square roots, it's helpful to memorize the squares of integers up to at least 15 to make calculations quicker.

Learn how to calculate 20 times the square root of 49 with a step-by-step solution. This problem covers basic arithmetic operations involving square roots and multiplication. Suitable for students in Grades 6-8.

Math Problem Statement

20 ⋅ √ 49

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