Question

Use significant digits, find the product of 7.095 and 2.55.

A. 18.09
B. 18.09225
C. 10.0923
D. 18.1

Answer 1

B.

Explanation:

Answer 2

Use a calculator to find that
7.095*2.55 = 18.09225

Then round to the nearest tenth to get 18.1

Why the nearest tenth? Because we want the answer to have 3 sig figs. This is the smallest number of sig figs between the two original numbers (7.095 and 2.55).

Answer: Choice D) 18.1