Question

janine estimated that the square of 4.1 is approximately 16. Justify her estimate and then find the exact value

Answer 1

16.81

Explanation:

Given:

Number = 4.1

Find:

Square of the given number

Computation:

[4.1]²

⇒ [4.1] × [4.1]

⇒ 16.81

If Janine square 4.1 by assuming (round off) 4 as an integer number then gets 16, which means Janine's estimate would be considered appropriate.