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Svet_ta [14]
3 years ago
9

The dimensions of the rectangular pool shown below are 40 yards by 20

Mathematics
1 answer:
Maurinko [17]3 years ago
3 0

Answer:

We need to put 120 yards of fence around the pool.

Step-by-step explanation:

Given that, The length and breadth of the rectangle pool are 40 and 20 yards.

We need to put fence around the pool.  The measure of the fence will be equal to the perimeter of the pool.  The formula for the perimeter of the rectangle is

Here l is the length; b is the breadth.

On substituting the values, we get the perimeter of the rectangle.

Therefore, Perimeter .

So, we need to put 120 yards of fence around the pool.

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B) The number of volume of a cylinder is half of its number of the total surface area.
faust18 [17]

Answer:

V=179.6cm^3

Step-by-step explanation:

the volume of a cylinder is given by:

V=\pi r^2h

where r is the radius and h is the height.

and the surface area:

SA=2\pi r^2+2\pi rh

the first term is the area of the circles and the second term is the area of the body.

since "The number of volume of a cylinder is half of its number of the total surface area." we will have that:

V=\frac{1}{2}SA

substitutig the equivalent expressions on each side:

\pi r^2 h = \frac{1}{2} (2\pi r^2+2\pi r h)

and we simplify and solve for the height (since is the value we don't know of the cylinder):

\pi r^2 h = \pi r^2+\pi r h\\\pi r^2h-\pi rh=\pi r^2\\h(\pi r^2-\pi r)=\pi r^2\\h=\pi r^2/(\pi r^2-\pi r)

we substitute the value of the radius r=7cm, and we get:

h=\pi (7cm)^2/(\pi (7cm)^2-\pi (7cm))\\h=153.938/(153.938-21.991)\\h=153.938/131.947\\h=1.1666cm

thus the volume is:

V=\pi r^2h

V=\pi (7cm)^2(1.1666cm)\\V=179.6cm^3

3 0
2 years ago
Read 2 more answers
Which is bigger: 17.5% or 1/6
elena-s [515]


In order to find this out, let's convert both of them into percents. Since 17.5 is already a percent, we only have to convert 1/6 into a percent. To convert 1/6 into a percent, you have to divide the numerator by the denominator. If you do that, you will get 0.1666..... as a repeating decimal. Now, multiply the decimal by 100 or just move the decimal 2 spaces to the right to get the percent. If you do that, you will get 16.6%. Since it is a repeating decimal, you can round it to 16.7%. So, 17.5% is larger than 1/6.

Hope it helps :)

6 0
3 years ago
Read 2 more answers
The area of a circle is 153.86 square meters. What is the diameter of the circle? Use 3.14 for π
Sav [38]

Answer: √ 4A /π or  13.996450848446

Step-by-step explanation:

D = 2R

C = 2πR

A = πR2

where:

R: Radius

D: Diameter

C: Circumference

A: Area

π: 3.14159

3 0
2 years ago
Read 2 more answers
One country has 12 stone bridges and 20 steel bridges. What is the ratio of ? A. Stone bridges to steel bridges. B. Steel bridge
Gemiola [76]

Answer:

A. Stone bridges to steel bridges=

12 : 20

6 : 10

3 : 5

answer = 3 : 5

B. Steel bridges to Stone bridges

20 : 12

10 : 6

5 : 3

answer = 5 : 3

Total bridges = 20+12=32

C. Total bridges to steel bridges

32 : 20

16 : 10

8 : 5

answer = 8 : 5

3 0
2 years ago
What’s the answer? Because I can’t find it out myself
11Alexandr11 [23.1K]

Answer: 1, 5, 2

All you do is subtract 3 from the y

7 0
3 years ago
Read 2 more answers
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