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Inga [223]
3 years ago
11

find (a) the area and (b) the circumference of each circle using π=3.14. Round to the hundredths' place. 1. the diameter of the

circle is 9.5cm. 2. the radius of the circle is 4cm.

Mathematics
2 answers:
mash [69]3 years ago
7 0
28a)  area = π (r^2) = π (4.75^2) = 70.84625 cm^2
28b)  circumference = πD = π (9.5) = 29.83 cm
29a)  area = π (r^2) = π (4^2) = 50.24 cm^2
29b)  circumference = πD = π (8) = 25.12 cm
Arada [10]3 years ago
5 0

area = pi x r^2

circumference = 2x pi x r or pi x d

1st one diameter = 9.5 cm

so radius = 9.5/2 = 4.75

area = 3.14 x 4.75^2 = 70.85 square cm

circumference = 3.14 x 9.5 = 29.83 cm


2nd one radius = 4

area = 3.14 x 4^2 = 50.25 square cm

circumference = 2 x 3.14 x 4 = 25.12 cm

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Answer:

5. D (4,6)

6. B (7.8)

Step-by-step explanation:

5. Add the two X coordinates (6+2) and divide that by 2 (8/2=4), do the same for the two Y coordinates (4+8=12, 12/2=6)

6. Use the distance formula \sqrt{(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2}\\

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Each one of four pies were cut into 8 pieces for dinner. After dinner there remained 1/2 of a pie, o pie, 3/8 of a pie and 5/$of
Marizza181 [45]

Answer: What you would have left is 12 pieces of pie

Step-by-step explanation: As stated in the question, one pie has been sliced into 8 pieces, and there are three pies in all. That means we had at the beginning 3 x 8 slices of pie which equals 24 pieces.

Also if each pie had been sliced into 8 pieces then each can be represented as 8/8. Therefore eating one slice would leave you with 7/8 (that is 8/8 minus 1/8).

So, each of the three pies now have the following left overs;

1/2, 3/8 and 5/8.

Adding them all together would give,

1/2 + 3/8 + 5/8

Using 8 as the common denominator

4/8 + 3/8 + 5/8

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8 0
2 years ago
1/4 of women have a disability. If there are 56 women in a
slavikrds [6]

Answer:

14

Step-by-step explanation:

Because 1/4 of women have a disability, you would expect 1/4 * 56 = 14 women to have a disability out of 56 women.

6 0
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Makovka662 [10]

Answer:

Test statistic = 2

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Step-by-step explanation:

We are given the following in the question:

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Sample mean, \bar{x} = $100

Sample size, n = 100

Population standard deviation, σ = $10

First, we design the null and the alternate hypothesis

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Formula:

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