2 years ago

How do I get this answer

Mathematics

1 answer:

sveticcg [70]2 years ago

6 0

Answer:

Round it otherwise round it because i

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I need to find the surface area. it's a cut sphere with a diameter of 14.

alex41 [277]

Given data:

The diameter of the cut sphere, D=14 in.

The radius of the cut sphere is,

$\begin{gathered} r=\frac{D}{2} \\ r=\frac{14}{2} \\ r=7\text{ in} \end{gathered}$

The cut sphere is called a hemisphere.

The surface area of a sphere is

$A_1=4\pi r^2$

So, the lateral surface area of a hemisphere is half the surface area of sphere. Therefore, the lateral surface area of a hemisphere is,

$\begin{gathered} A_2=\frac{4\pi r^2}{2} \\ A_2=2\pi r^2 \end{gathered}$

The hemisphere has a lateral surface and a circular surface. The area of the circular surface is,

$A_3=\pi r^2$

Therefore, the total area of the hemisphere is,

$\begin{gathered} A=A_2+A_3 \\ A=2\text{ }\pi r^2+\pi r^2 \\ A=3\text{ }\pi r^2 \end{gathered}$

The total surface area of a hemisphere is,

$\begin{gathered} A_{}=3\text{ }\pi r^2 \\ A=3\text{ }\pi\times7^2 \\ A=461.8in^2 \end{gathered}$

Therefore, the total surface area of the cut sphere is 461.8 square inches.

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7 months ago

What are the zeros of the polynomial function

aliya0001 [1]

Answer:

Step-by-step explanation:

F(x) = x^3 - 5x^2 - 6x

F(x)=x(x^2-5x-6)

F(x)=x(x-6)(x+1)

So, x=0,-1,6

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3 years ago

Jeremy is $124.60 in debt to his grandparents. He determines that he can pay them back in five months. What effect will his repa

3241004551 [841]

Answer:

brainly.com/question/11536615

Step-by-step explanation:

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2 years ago

You have 50$ to spend at the carnival. First, you must pay $9.20 for an entrance ticket. Each snack costs $4.25, including tax.

asambeis [7]

50 - 9.20 = 40.80 so 40.80/ 4.25 = 9.6 but you can’t buy .6 of a snack so it’s 9

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2 years ago

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At a French restaurant, you order a salad for $2.50 and lasagna for $8.25. If the sales tax is 8%, what is the total of your bil

vampirchik [111]

Answer:

$11.61

Step-by-step explanation:

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2 years ago

How do I get this answer ​

How do I get this answer