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Andrews [41]
2 years ago
13

Help Now Please Find the surface area sphere

Mathematics
2 answers:
Shkiper50 [21]2 years ago
8 0

Answer:

900pi

Step-by-step explanation:

formula for sphere's surface area :

4πr^2

radius = 15 (30/2)

4*pi*15^2 = 900pi

nikitadnepr [17]2 years ago
4 0

Answer:

The surface area is 2827.43

Step-by-step explanation:

This is the formula:

A= 4 π r^2= 4· π· 15^2 = 2827.43339

Hope this helps you!

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Is college Algebra hard ?
Degger [83]
It depends on what level of classes you take, but algebra classes in college do tend to be harder than algebra classes in high school or middle school.
7 0
2 years ago
You estimate that a box contains 141 envelopes the actual number of envelopes is 150 find the percent error
S_A_V [24]
0.0094% error



Divide 150/141. You get 0.94, then you need to find the percentage of that by clicking the percent button of your calculator
7 0
3 years ago
Evaluate 9+ w/5 + 5h when h= -8 and w= 20
andrezito [222]

Answer:

<u><em>Answer is below</em></u>

Step-by-step explanation:

<u><em>Evaluate for h=−8,w=20</em></u>

<u><em>9+20/5+(5)(-8)</em></u>

<u><em>So therefore your answer would be -27</em></u>

5 0
3 years ago
To steam rice, Paul uses m cups of water for every p
GenaCL600 [577]

Answer:

\frac{(p + 2)m}{p}

Step-by-step explanation:

Given

m cups of water = p cups of rice

Required

Cups of water required for p + 2 cups of rice

<em>The question shows a direct proportion between cups of rice and cups of water.</em>

<em>So, the first step is to get the proportionality constant (k)</em>

<em />

This is calculated using the following expression;

m = k * p

Where k represents cups of water and p represents cups of rice

Make k the subject of formula

k = \frac{m}{p}

Let x represents cups of water when cups of rice becomes p + 2;

k becomes:

k = \frac{x}{p + 2}

Equate both expressions of k; to give

\frac{m}{p} = \frac{x}{p + 2}

Multiply both sides by p + 2

(p + 2) * \frac{m}{p} =(p + 2) *  \frac{x}{p + 2}

(p + 2) * \frac{m}{p} =x

x = (p + 2) * \frac{m}{p}

x =  \frac{(p + 2)m}{p}

<em>Hence, the expression that represents the cups of water needed is </em>\frac{(p + 2)m}{p}<em></em>

4 0
3 years ago
Marcus is building a fence around his rectangular backyard. The length of his backyard is 75 3/4 ft, and the width is 81 1/4 ft.
Allisa [31]

Answer:

Step-by-step explanation:

Answer:

4,923.75ft²

Step-by-step explanation:

The area of the backyard = Length * width \

Area of the backyard = 75 3/4 * 81 1/4

Area of the backyard = 303/4 * 325/4

Area of the backyard = 6,154.6875ft²

If 3/4 of the fence is finished, the area of the finished part is expressed as;

Finished part = 1/5 * 6,154.6875

Finished part = 1,230.9375ft²

Part left unfinished = 6,154.6875-1,230.9375

Part left unfinished  = 4,923.75ft²

4 0
3 years ago
Read 2 more answers
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