**Answer:**

81 cm

**Step-by-step explanation:**

Area= 5346 cm^2

a=66cm

b=?

b=Area÷a

b=5364÷66

b=81cm

To obtain an **estimate of a parameter** of a population, we use confidence intervals.

**Confidence intervals:**

The larger the sample size, the closest the parameter estimate is to the value of the population, as the **margin of error** of confidence intervals is inversely proportional to the sample size, that is, a greater sample leads to a smaller margin of error.

Thus, you should select the highest sample size in the options.

For more on confidence interval/margin of error, you can check brainly.com/question/22718960

F(1) + g(2) = (2*1 - 5) + |(-3)*2 - 1| = -3 + 7 = 4

[Where * represents multiplication.]

Hello there!

78% as a decimal is 0.78

All you have to do is move the decimal place two times to the left.

78%

7.8

0.78 <---- this is your answer, and how to get to it.

I hope this helps!