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Vladimir [108]
3 years ago
10

A rectangle room measures 13 feet by 15 feet. The ceiling fan is 8 feet high. Find the total area of all 4 walls that will need

to be painted.
448 ft
224 ft
560 ft
336 ft
Mathematics
1 answer:
aniked [119]3 years ago
4 0

Answer:

448 ft^2

Step-by-step explanation:

The area of the walls is the perimeter of the room multiplied by the height.

P = 2(L + W)

P = 2(13 ft + 15 ft)

P = 2(28 ft)

P = 56 ft

A = perimeter * height

A = 56 ft * 8 ft

A = 448 ft^2

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Answer:

x= -4

Step-by-step explanation:

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Which trend line has been drawn correctly using the divide-center method?
dangina [55]

Answer:

I'm pretty sure its C but some please correct me if I'm wrong.

3 0
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The volume of a sphere is 3,000π m3. What is the surface area of the sphere to the nearest square meter? 165 m2 2,158 m2 1,079 m
DENIUS [597]
To solve this problem and calculate the area of the sphere, you must apply the following formulas:

 Formula N° 1:

 V=4/3(πr³)  

 V is the volume of the sphere (V=3,000π m³).
 r is the radius.

 Formula N° 2:

 A=4πr²

 A is the area of the sphere.
 r is the radius.

 As you can see, you don't have the value of the radius "r". So, you must rewrite the Formula N° 1, and clear "r":

 V=4/3(πr³)
 (3,000)(3)=4πr²
 r³=9,000/4π
 r=(9,000/4π)<span>^1/3
</span> r=13.1037 m

 Then, to calculate the area of the sphere, you must substitute the value of "r" into the Formula N° 2:

 A=4πr²
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 <span>What is the surface area of the sphere to the nearest square meter?
</span>
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8 0
3 years ago
3 of 8<br> The area of a circle is 16.71cm2.<br> Find the length of the radius rounded to 2 DP.
Cerrena [4.2K]

Answer:

Radius = 2.31 cm

Step-by-step explanation:

Area of circle = 16.71 square centimeters

\pi r^2 = 16.71 \\3.14r^2=16.71\\r^2=\frac{16.71}{3.14}\\r^2=5.32\\\sqrt{r^2}=\sqrt{5.32}\\r=2.306

Radius of circle = 2.31 centimeter

6 0
3 years ago
Simplify the expression x^5 • x^7
iragen [17]

Answer:

\Huge\boxed{\mathsf{\Rightarrow X^1^2}}

Step-by-step explanation:

<h3><u>TO SOLVE:</u></h3>

With exponent rule.

<h3><u>SOLUTIONS:</u></h3>

First, use exponent rule.

<u><em>EXPONENT RULE:</em></u>

<u><em /></u>

\displaystyle \mathsf{\Rightarrow A^B*A^C=A^B^+^C}}

\displaystyle \mathsf{X^5^+^7}}

Solve.

Add the numbers from left to right.

\displaystyle \mathsf{7+5=\boxed{\mathsf{\Rightarrow 12}}}}

\Rightarrow \Large \boxed{\mathsf{X^1^2}}}

So, the final answer is x¹².

7 0
3 years ago
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