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denis23 [38]
3 years ago
11

The diameter of a circle is 14 ft. Find its area to the nearest tenth.

Mathematics
2 answers:
Hunter-Best [27]3 years ago
4 0

Answer:

The answer is <em>153.9</em>

Step-by-step explanation:

To get the answer we will first <em>divide 14 by 2</em> because we are trying to find the area.  14 ÷ 2 = <em>7.</em>  Now multiply<em> 7 x 7 x π</em>, which equals<em> 154.9</em> rounded to the nearest tenth.

Leokris [45]3 years ago
3 0

Answer:

153.9 ft.²

Step-by-step explanation:

A=\pi r^2 where r is the radius of the circle

The radius is equal to half the diameter, so to find r, divide 14 ft. by 2:

14÷2=7

Plug 7 into the equation as r

A=\pi (7)^2\\A=\pi (49)\\A=153.9

Therefore, the area of the circle is 153.9 ft.² when rounded to the nearest tenth.

I hope this helps!

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someone please explain to me how to find the area PLEASE! Find the area and perimeter of quadrilateral ABCD below. Explain your
Lunna [17]

Answer:

Part A) The area of the figure is 24\ units^{2}

Part B) The perimeter of the figure is 20\ units

Step-by-step explanation:

step 1

Find the area of the figure

we know that

The area of the figure is equal to the area of triangle ABD plus the area of triangle BCD

The area of triangle is equal to

A=\frac{1}{2}bh

<u>Area of triangle ABD</u>

Observing the graph

b=BD=(-2+8)=6\ units

h=(9-5)=4\ units

substitute

A=\frac{1}{2}(6)(4)=12\ units^{2}

<u>Area of triangle BCD</u>

Observing the graph

b=BD=(-2+8)=6\ units

h=(5-1)=4\ units

substitute

A=\frac{1}{2}(6)(4)=12\ units^{2}

The area of the figure is

12\ units^{2}+12\ units^{2}=24\ units^{2}

step 2

Find the perimeter of the figure

we know that

The perimeter of the figure is equal to

P=AB+BC+CD+AD

we have

A(-5,1),B(-8,5),C(-5,9),D(-2,5)

the formula to calculate the distance between two points is equal to

d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}

Find the distance AB

d=\sqrt{(5-1)^{2}+(-8+5)^{2}}=5\ units

Find the distance BC

d=\sqrt{(9-5)^{2}+(-5+8)^{2}}=5\ units

Find the distance CD

d=\sqrt{(5-9)^{2}+(-2+5)^{2}}=5\ units

Find the distance AD

d=\sqrt{(5-1)^{2}+(-2+5)^{2}}=5\ units

substitute the values

P=5+5+5+5=20\ units

7 0
3 years ago
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AlladinOne [14]
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3 years ago
500 stickers 25 percent are hearts how many are stars
melomori [17]

Answer:

375

Step-by-step explanation:

500 x 0.25 = 125

500 - 125 = 375

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Answer:

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Step-by-step explanation:

1. Find the numerator:

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I'll use subscript notation for brevity, i.e.

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8 0
3 years ago
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