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Inga [223]
4 years ago
11

Find the surface area of a sphere if the circumference of a great circle is 43.96 centimeters. Use 3.14 for p. Round to the near

est tenth.
Mathematics
1 answer:
KIM [24]4 years ago
5 0

Circumference = 43.96 cm, find radius:


Circumference = 2πr

43.96 = 2(3.14)r

43.96 = 6.28r

r = 43.96 ÷ 6.28 = 7 cm


We found out that the radius is 7 cm, find surface area:


Surface area = 4πr² = 4 (3.14) (7)² = 615.4 cm² (nearest tenth)


Answer: 615.4 cm²


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ryzh [129]

<em>Sorry, but you need to be more specific!!  </em>


<em>Happy Mathing!!</em><em> </em>

4 0
4 years ago
Andrew bought a new car for $32,000. The dealer gave him $10,000 for his trade-in. Sales tax is 5% but is only charged on the di
xz_007 [3.2K]

Answer:Andrew will pay $1100 in sales tax

Step-by-step explanation:

Andrew bought a new car for $32,000. The dealer gave him $10,000 for his trade-in. Sales tax is 5% but is only charged on the difference between the cost of the new car and the value of the trade-in. The value of the difference between the cost of the new car and the value of the trade-in would be

32000 - 10000 = $22000

Therefore, the amount that Andrew will pay in sales tax would be

5/100 × 22000 = 0.05 × 22000 = $1100

5 0
4 years ago
Make p the subject of the relation A is equal to 1/2 ( p + b) h​
Amanda [17]

Answer:

2A /h  -b =p

If you need it with a common denominator

(2A -bh)/h = p

Step-by-step explanation:

A = 1/2 ( p+b)h

Multiply each side by 2

2A =  ( p+b)h

Divide by h

2A/h =  ( p+b)h/h

2A/h =  ( p+b)

Subtract b

2A/h   -b =   p+b -b

2A /h  -b =p

If you need it with a common denominator

(2A -bh)/h = p

3 0
3 years ago
How many solutions does the equation 3x − 7 = 4 + 6 + 4x have
Sunny_sXe [5.5K]

Answer:

The given equation 3x − 7 = 4 + 6 + 4x has one solution.

Step-by-step explanation:

Given : Equation 3x − 7 = 4 + 6 + 4x

We have to find the number of solutions of the given equation.

Consider the given equation 3x − 7 = 4 + 6 + 4x

Simplify, we have,

3x − 7 = 10 + 4x

Now subtract 3x both side, we hvae,

-7 = 10 + 4x - 3x

Simplify, we have,

- 7 = 10 + x

Subtract 10 both side, we have,

-7 - 10 = x

x = - 17

Thus, The given equation 3x − 7 = 4 + 6 + 4x has one solution.

8 0
4 years ago
Read 2 more answers
A larger circle has a circumference of36.A smaller circle has a circumference of one third of that. Find the radius of the small
spin [16.1K]

Answer:

r=1.91

Step-by-step explanation:

hopefully this helps...

Using the formula

C=2πr

Solving for

r= C/2π = 12/2·π = 1.90986

5 0
3 years ago
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