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Vikentia [17]
3 years ago
8

Type the correct answer in the box. Assume that pi=3.14 and round to the nearest hundredth.

Mathematics
2 answers:
Virty [35]3 years ago
7 0
<h2>Answer:</h2>

The area of shape is: 48.38 square centimeters

<h2>Step-by-step explanation:</h2>

The area of the shape is the area of the square minus the sum of the area of four half semicircles.

We know that four half semicircles will be equal to one circle.

Hence, the area of shape is:

Area of square-Area of circle.

We know that the area of a square with side length s is calculated by:

\text{Area\ of\ square}=s^2

Also, the area of a circle with radius r is calculated by using the formula:

\text{Area\ of\ circle}\pi r^2

Here the side length of the square i.e. s=15 cm.

and the radius of the circle i.e. r=15/2 cm

Hence,

\text{Area\ of\ square}=(15)^2

i.e.

\text{Area\ of\ square}=225\ cm^2

and

\text{Area\ of\ circle}=3.14\times (\dfrac{15}{2})^2

i.e.

\text{Area\ of\ circle}=176.625\ cm^2

Hence, The area of shape is:

\text{Area\ of\ shape}=225-176.625

i.e.

\text{Area\ of\ shape}=48.375\ cm^2

ikadub [295]3 years ago
4 0
White area = \[\frac{15^2\pi}{4}\] Shaded area = \[15^2-\frac{15^2\pi}{4}\]
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An amusement park sells child and adult tickets at a ratio of 3:1. On Saturday, they sold 63 adult tickets. How many child ticke
nalin [4]

Answer:

The number of child tickets sold by the amusement park is 189.

Step-by-step explanation:

Let A represent the number of adult tickets and C represents the number of child tickets, therefore we have:

3:1 = C:A .................... (1)

Where;

C = ?

A = 63

Substituting for the value into equation (1), we have:

3:1 = C:63

This can be converted to solve for C as follows:

3 / (3 + 1) = C / (C + 63)

3 / 4 = C / (C + 63)

0.75 = C / (C + 63)

0.75(C + 63) = C

0.75C + (0.75 * 63) = C

0.75C + 47.25 = C

47.25 = C - 0.75C

47.25 = 0.25C

C = 47.25 / 0.25

C = 189

Therefore, the number of child tickets sold by the amusement park is 189.

4 0
3 years ago
Shawna plans to join the landscape arboretum and attend its gardening classes. The cost of a membership is $40 per year, plus a
myrzilka [38]

Answer:

可能就是...那里的人希望如果您需要更多帮助,现在可以帮助我

Kěnéng jiùshì... Nàlǐ de rén xīwàng rúguǒ nín xūyào gèng duō bāngzhù, xiànzài kěyǐ bāngzhù wǒ

Step-by-step explanation:

4 0
3 years ago
Sylvie needs $110 for a concert ticket. She already has $16 and she can earn the rest by working 10 hours at her job. If h repre
oksano4ka [1.4K]

Answer:9.4$ a hour

Step-by-step explanation:

110 - 16 = 94

94 / 10 = 9.4

she makes 9.4$ a hour

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3 years ago
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How can you evaluate this expression?|18| =
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That is just absolute value, basically what it means is take off whatever sign there was attached to it (such as a negative sign)
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3 years ago
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Solve the given equation <br> 7/10X=4 3/5
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Answer:

x

=

40

Step-by-step explanation:

5 0
3 years ago
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