Question

A square has a side of 6.25 feet. What is the area in square feet? Round to the correct significant digits.

Answer 1

Which of the following best represents the average rate at which a person can quickly walk?

3 steps per hours

3 steps per second

30 steps per minute

30 steps per second

Answer 2

@mathstudent55

Answer 3

Why did you ask so many questions on one post?
It's hard to answer them and make sure you understand which one I am answering each time.

Answer 4

i deleted the rest

Answer 5

Ok, let's deal with the two questions still here.

Answer 6

ok

Answer 7

1. A square has a side of 6.25 feet. What is the area in square feet? Round to the correct significant digits.

You need the formula for the area of a square.
It is simply the square of the length of a side.

\(A = s^2\)

Since the side is 6.25 ft, just square that number.
Then to write the correct number of significant digits, you need to have as many significant digits in the answer as in the the given information.

How many significant digits does 6.25 have?

Answer 8

1?

Answer 9

No. Each digit that is not a place holder is a significant digit.
6.25 has 3 significant digits.
The first step is to square 6.25.
What is 6.25 * 6.25 = ?

Answer 10

39.0625

Answer 11

Good.
That has many digits.
We need to have only 3 significant digits in the answer, so we need to round it off to the nearest tenth square foot.