Question

In arithmetic 17.8 × 3.1143 = 55.4354. But as a result of experimental measurements the best way to express the product is:
(A) 55.3454 (B) 55.4
(C) 55.44 (D) 55.435

Answer 1

The answer is (B) 55.4 because when we multiply or divide, the resultant should have the least number of significant figures or in other words the resultant should have same significant no. as that of the no. having the least significant figures which are being multiplied or divided.

Answer 2

Concept :

The amount of basic single digits in a verbalization's coefficient is suggested as the tremendous figures in sensible documentation. How much precision or affirmation a planner or specialist uses to communicate a sum is shown by the amount of immense figures in a clarification. Colossal figures are the amount of digits that add to the rightness of a value, routinely an assessment. The essential non-zero digit is where we start counting basic figures. Conclude the quantity of tremendous digits there that are given an extent of numbers.

Given:

$17.8 * 3.1143 = 55.4354.$

To Find:

the best way to express the product

Solution:

According to the problem,

$17.8 * 3.1143 = 55.4354.$

By applying the rule of significant figure ,

we can express the figure as $55.44$

Hence the answer will be    $55.44$

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