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yulyashka [42]
3 years ago
6

A patio in the shape of a semicircle has a diameter of 21 ft. What is the approximate area of the patio, rounded to the nearest

square foot? Use 3.14 to approximate pi star times. ft2
Mathematics
2 answers:
galben [10]3 years ago
6 0
Diameter = 21 ft
Radius = 21/2 ft

Area of a semi circle = πr^2 /2

= 3.14 x( 21/2 )^2/2
= 346.185/2
= 173.0925 ft^2

The answer is 173 ft^2
lana [24]3 years ago
4 0
We know, Area of a Semi-circle = πr² / 2
Here, r = 21/2 = 10.5

So, A = 3.14 * (10.5)² / 2
A = 346.185 / 2
A = 173.09 Ft²

In short, Your Answer would be 173 Feet²

Hope this helps!
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In the figure below, ⎯⎯⎯⎯⎯⎯⎯⎯,⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯, and ⎯⎯⎯⎯⎯⎯⎯⎯⎯ are medians of △. If KC = 108 and OC = 2n+10, then n=
Nimfa-mama [501]

The question was incomplete. Below you will find the missing content.

In the figure below, BL, AM, and CK are medians of △ABC. If KC = 108 and OC = 2n + 10, then n=

The picture is attached below.

The value of n is 31.

The median is the line connecting the vertex and its midpoint on the opposite side of the triangle.

The intersection of all 3 medians of the triangle is called the centroid.

As we know centroid divides the median in the ratio of 2:1.

In the given picture,

Medians of triangle △ABC are AM, BL, and CK.

So the centroid of the triangle is O.

Given that KC= 108

As the centroid O divides the line KC in 2:1.

Let OC=2x

KO= X

As KC= KO+OC

⇒ 108= x+2x

⇒ 3x=108

⇒ x=108/3

⇒ x=36

Then OC= 2x= 2*36= 72

As given in the question OC= 2n+10

putting the value of OC in above equation

⇒ 72= 2n+10

⇒ 2n= 72-10

⇒ 2n=62

⇒ n=62/2

⇒n=31

Therefore the value of n is 31.

Learn more about the median of the triangle

here: brainly.com/question/2264495

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2 years ago
A student's pay of $18 an hour is $4 more than twice the amount the student earns per hour at an internship. Enter and solve an
Natasha2012 [34]
1. You have that a<span> student's pay of $18 an hour </span>is <span>$4 more than twice the amount the student earns per hour at an internship.

 2. So, let's call the </span><span>hourly pay of the internship: "x". Then, you have:
</span><span>
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 3. When you clear the variable "x", you obtain:

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 x=14/2
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3 years ago
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sesenic [268]
Answer: The ladder is 5.3 m long
Step by step solution
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2. Soh, Cah, Toa
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3. Solve for hypotenuse
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h = 4.5/sine (58)
h = ~ 5.3 m
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