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4 years ago

Find the surface area of the closed hemisphere

Mathematics

2 answers:

V125BC [204]4 years ago

8 0

Diameter = 8 yards so the Radius = 4 yards:

Area of a sphere = 4π.R² and hemisphere = 2π.R²

Area of hemisphere = 2.π.(4)² = 32.π
But note we didn't calculate yet the are that closes this hemisphere:
Area of the cicle = π.R² = π.(4)² = 16.π, so the surface area of the hemisphere is 32π + 16π = 48.π (Or =150.8 yard²)

lina2011 [118]4 years ago

3 0

Its about 100.530964915.

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Graph x+2 is greater than -2

sineoko [7]

The answer is in the attachment
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3 years ago

Evaluate the following expression using the values given:

Free_Kalibri [48]

x^3 − 2y^2 − 3x^3 + z^4

Plug in 3 for x, 5 for y, and -3 for z (given)

(3)^3 -2(5^2) - 3(3^3) + (-3)^4

Simplify

(3)^3 = 3 x 3 x 3 = 27

-2(5^2) = -2 x 25 = -50

-3(3^3) = -3 x 27 = -81

(-3)^4 = -3 x -3 x -3 x -3 = 9 x 9 = 81

Combine all the terms

27 + (-50) - 81 + 81

27 - 50 - 81 + 81

-23 + 0

-23

-23, or (C) is your answer

hope this helps

7 0

4 years ago

What is an equation of the line that passes through the points (7,4) and (-5,4)

prisoha [69]

Answer:

y=4

Step-by-step explanation:

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3 years ago

Hannah is 3 years older than twice her brother Joey’s age. Joey is 2 years old. How old is Hannah? Show all of your work!

DaniilM [7]

Answer:

Step-by-step explanation:

twice for joey's age so joeys age is 2 double that it will be 4 so 3+4=7

5 0

4 years ago

You are scheduled to receive $15,000 in two years. When you receive it, you will invest it for six more years at 7.1 percent per

olga_2 [115]

Answer:

$22,637

Step-by-step explanation:

When u recive $15,000 you invest it at 7.1 percent per year.

To solve this we have to do a sume of all dollars that we have at the first year with the intrest, and that wil be the total for the second years. And repeat for the follows years.

1º year= 15,000*1.071 (7.1%)=$16,065

2º year= 16,065*1.071 (7.1%)=$17,206

3º year= 17,206*1.071 (7.1%)=$18,427

4º year= 18,427*1.071 (7.1%)=$19,735

5º year= 19,735*1.071 (7.1%)=$21,137

6º year= 21,137 *1.071 (7.1%)=$22,637

The total is the money at the end of the years= $22,637

7 0

3 years ago