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Rina8888 [55]
3 years ago
12

Estimate the area of a circle with a radius of 3.1 feet

Mathematics
1 answer:
Aliun [14]3 years ago
5 0

Answer:

Step-by-step explanation:

Area of a circle = pi x square of radius = 30.190 ft

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In 1950, scientists estimated a certain animal population in a particular geographical area to be 6,400. In 2000, the population
nekit [7.7K]

Answer:8600

Step-by-step explanation:

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3 years ago
A bicycle tire has a radius of 11 inches. To the nearest inch, how far does the tire travel when it makes 7 revolutions?
jok3333 [9.3K]

Answer:

d = 483.56 inches

Step-by-step explanation:

We have,

Radius of a bicycle tire is 11 inches. It is required to find the distance traveled by the distance covered by the tire when it makes 7 revolutions. One revolution means the circumference of circle. So,

C=2\pi r\\\\C=2\times 3.14\times 11\\\\C=69.08\ \text{inches}

In 7 revolution, it will cover a distance of 7C i.e.

C=69.08\times 7\\\\C=483.56\ \text{inches}

So, the tire will cover a distance of 483.56 inches in 7 revolutions

8 0
3 years ago
How do you do this? I have no idea
Helga [31]

Answer:

c

Step-by-step explanation:

5 0
3 years ago
Fill in the missing numbers to find two equivalent fractions 4/5 please help !!
konstantin123 [22]
First fill in the blank box is 2 second is 8 third is 80
7 0
2 years ago
if the area of a square is 144 feet and the perimeter of the triangle is 28 feet, what is the perimeter of the room's floor?
FinnZ [79.3K]

Answer:

52+12\pi

Step-by-step explanation:

The diagram for the question is attached below

perimeter of the triangle is 28 feet

area of a square is 144 feet

Area of the square is side^2

side ^2= 144

take square root on both sides

side = 12

side of the square = 12

side is the diameter of the semicircle

Diameter = 12 , so radius = 12 divide 2 = 6

circumference of semicircle = 2\pi r=2\pi (6)=12\pi

one side of the rectangle is calculated in the perimeter of triangle and other side is calculated using circumference

perimeter of other two side = 2(12)= 24

Total perimeter = 28+24+12\pi =52+12\pi

4 0
3 years ago
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