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Gnom [1K]
3 years ago
15

The diameter of a circle is 8 inches.what us the area

Mathematics
2 answers:
kari74 [83]3 years ago
8 0
The area formula for a circle is \pi r^{2}.
So, if we know the diameter of the circle, we can divide the diameter by 2 to get <em>r</em> (radius).

A = \pi (8/2)^{2} = \pi (4)^2 = 16\pi inches squared.

Hope I could help you out!
Have a good one, and God bless you!
Alina [70]3 years ago
5 0
A = 1/4 * (pi) * d^2
A = 1/4 * (pi) * 8^2
A = 1/4 * (pi) * 64
A = 1/4(64) * (pi)
A = 64/4 * (pi)
A = 16 (pi) in^2
Your answer is 16 pi in^2
~Silver
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Greater than because the line is dashed and the shaded region is in the positive or less negative numbers area. Greater than or equal would be the same but with a solid line.
5 0
3 years ago
A regular assignment has 15 sides.Calculate the size of each interior angle
MariettaO [177]

Answer:

The measure of an interior angle of a regular 15-gon is 120°.

Step-by-step explanation:

We need to determine the measure of the size of an interior angle of a regular 15-gon having 15 sides.

Thus,

The number of sides n = 15

Hence,

Using the formula to determine the measure of an interior angle of a regular 15-gon is given by

(n - 2) × 180° = n × interior angle

substitute n = 15

(15 - 2) × 180 = 15 × interior angle

13 × 180 = 15 × interior angle

Interior angle = (10 × 180) / 15

                      = 1800 / 15

                      = 120°

Therefore, the measure of an interior angle of a regular 15-gon is 120°.

6 0
3 years ago
Tony wants to calculate his average quiz score. The formula gives Tony’s average score A for a total of T points on n quizzes. T
Gnoma [55]
In calculating the average score, add the scores of each person and then divide it by the number of scores present. In this problem, Tony has forty seven points for five different quizzes. You are required to calculate for the average score of Tony. The formula is A = T/n, where A is the average score, T is the score, and n is the number of quizzes.  

A = T/n
A = 47/5
<u>A = 9.4</u> <span>               
Therefore, Tony has an average of 9.4 points in five different quizzes. </span>
6 0
3 years ago
4 is added to the numerator of the fraction 2/5 what number must be added to the denominator to make the fraction equivalent to
kondaur [170]

Answer: 7

Step-by-step explanation:

Hope this helps!

4 0
2 years ago
A map has a scale of 1 in. : 5 mi. The distance on the map between two cities is 11.5 inches. Find the actual distance between t
Vladimir [108]

Answer:

57.5 mi

Step-by-step explanation:

1 in = 5 mi

11.5 × 5 = 57.5 mi

6 0
3 years ago
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