Class 08 Activity – Square root of 2 (approximate)

 Activity – Square root of 2 (approximate)

Observations:

OA = AB (1 unit each)

2. ∆OAB is a right triangle.

OB2 = OA2 + AB2 (By Pythagoras Theorem)

OB2 = (1)2 + (1)2

OB2 = 2 units

 OB = √2 units.

3. From the number line, OC = √2 units (∵OB = OC).

4. On reading from the number line, OC = 1.4 units.

5. = 1.4 (correct to one place of decimal).