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Basile [38]
2 years ago
14

The radius of a circle is 3cm. What is the area of the circle? Use 3.14 for pie.​

Mathematics
1 answer:
vekshin12 years ago
6 0

Answer: 28.26 square cm

Step-by-step explanation:

A=\pi r^{2}=\pi(3)^{2} \approx 3.14(3)^{2} \approx \boxed{28.26 \text{ cm}^{2}}

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A theater has 358 seats on the main level and 122 seats in the balcony.There are 6 shows each day.What is the greatest number of
Alika [10]
The answer is 2,880 

First you would Add 358 and 122.

358+122= 480 (This is the total of seats in the theater)

Then multiply 480 by 6 (The days the show is playing)

480*6= 2,880
8 0
3 years ago
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In 2/3 of a hour, workers had installed 2/5 of a foor. At the rate,what fraction of the flooring is finished after 1 hour?
padilas [110]
3/5 or 60%.

2/3 hour is 40 minutes, so 1/3 is 20 minutes.

40 minutes have passed and 2/5 of the progress on the floor is complete. In 20 minutes, 1/5 of the work is complete. Add 20 minutes to 40 minutes to get 60 minutes, or an hour.
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3 years ago
What is:
RSB [31]

Answer:

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Step-by-step explanation:

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7 0
2 years ago
Which of the following sets of lengths can Sean use to make a right triangle?
Aleks [24]

Answer:

{8 cm, 15 cm, 17 cm}

Step-by-step explanation:

we know that

The length sides of a right triangle must satisfy the Pythagoras Theorem

so

c^2=a^2+b^2

where

c is the greater side (the hypotenuse)

a and b are the legs (perpendicular sides)

<u><em>Verify each case</em></u>

case 1) we have

{5 cm, 15 cm, 18 cm}

substitute in the formula

18^2=5^2+15^2

324=250 ----> is not true

therefore

Sean cannot make a right triangle with this set of lengths

case 2) we have

{6 cm, 12 cm, 16 cm}

substitute in the formula

16^2=8^2+12^2

256=208 ----> is not true

therefore

Sean cannot make a right triangle with this set of lengths

case 3) we have

{5 cm, 13 cm, 15 cm}

substitute in the formula

15^2=5^2+13^2

225=194 ----> is not true

therefore

Sean cannot make a right triangle with this set of lengths

case 4) we have

{8 cm, 15 cm, 17 cm}

substitute in the formula

17^2=8^2+15^2

289=289 ----> is true

therefore

Sean can make a right triangle with this set of lengths

6 0
2 years ago
The time it takes to cover the distance between two cities by car varies inversely with the speed of the car. The trip takes 5 h
kogti [31]

v=d/t

44=d/5

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v=220/11

v=20 mph

7 0
2 years ago
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