Anggarkan nilai bagi 11.4³.

A. 1731

B. 1500

C. 1331

D. 1000

option C. 1331.

Explanation:

The question asks for an estimate of 11.4³.

To calculate 11.4³ exactly to must multiply 11.4 * 11.4 * 11.4.

But to have an estimate, the easiest way is to round 11.4 to 11 and find 11³ = 11 * 11 * 11.

That is not a difficult operation.

That is equal to 11² * 11.

11² is a common square, which you should know that it is 121. Else, you can multiply 11 * 11 easily and obtain 121:

11 * 11 = (10 + 1) * 11 = 110 + 11 = 121

Then multiply 11 * 121

11 * 121 = (10 + 1) * 121 = 10 * 121 + 121 = 1210 + 121 = 1331

There you have your answer: option C. 1331.