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gulaghasi [49]
3 years ago
6

If a sphere has a radius of 2 cm, what is the approximate surface area of the sphere

Mathematics
2 answers:
Free_Kalibri [48]3 years ago
8 0
The answer is 50.27cm²

Tatiana [17]3 years ago
8 0

Answer:

Approximate surface area of the sphere is:

50.24 cm²

Step-by-step explanation:

We know that:

Surface area of sphere is given by 4πr²

Where r is the radius of the sphere

Here r=2 cm

Surface area=4×3.14×2²

                    = 50.24 cm²

Hence, approximate surface area of the sphere is:

50.24 cm²

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Mr castle shares out 64 marbles between emily and asif in the ratio 7:1 how many marbles does each child get
Novay_Z [31]

Answer:

<h2>Emily: 72 marbles</h2><h2>Asif: 8 marbles</h2>

<em>Step-by-step explanation:</em>

first lets find in how many shares is the total amount of marbles divided into:

7+1=8

now, lets find how many marbles are in each share:

64/8=8

now that we know that each share of marbles contains 8 marbles, we can find how many each child got:

Emily got 7 shares: 8*7= 72 marbles

Asif got 1 share: 8*1= 8 marbles

Hence,

<h3><em>Emily got 72 marbles, while Asif got 8 marbles</em></h3>
7 0
3 years ago
Brett has a $30 online gift certificate. He plans to buy as many books as he can. The cost of each book is $4. There is also a s
kkurt [141]

Answer:

7 books

Step-by-step explanation:

make an equation

x = # of books each book is $4 so its 4x

the shipping fee no matter how many books he buys will be $2 so it's just 2

the equation looks like this:

4x + 2 = 30

we set equal to 30 cuz he can't spend more than $30

solve for x

4x = 30 -2

4x = 28

x = 7

Brett can buy no more than 7 books.

7 0
3 years ago
| 2x + 2y = 10<br> y = 5+x
melisa1 [442]
2x + 2(5+x)=10
2x+10+2x=10
4x+10=10
4x=0
X=0
6 0
3 years ago
Solve for x please show work
Serggg [28]

Answer:

I am seeing you a LOT

Step-by-step explanation:

5 0
3 years ago
Which is the correct answer? A , B , C , or D?
NeX [460]

Answer:

A

Step-by-step explanation:

f(x) - g(x)

= x² - 8 - (4 - x) ← distribute parenthesis by - 1

= x² - 8 - 4 + x ← collect like terms

= x² + x - 12 → A

4 0
3 years ago
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