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2 years ago

Geometry Surface area and volume

Mathematics

1 answer:

Zigmanuir [339]2 years ago

6 0

Answer:

$volume=558.9$

Step-by-step explanation:

find the volume of the cone and the hemisphere and add them together

cone:

$Vcone=\pi r^{2} \frac{h}{3} \\\\V=\pi (5.3)^2(\frac{8.4}{3} )\\V=\pi (28.09)(2.8)\\V=247.09\pi \\V=247.1$

hemisphere:

$Vhemisphere=\frac{2\pi r^3}{3} \\V=\frac{2\pi (5.3)^3}{3} \\V=\frac{2\pi (148.877)}{3} \\V=\frac{297.754\pi }{3} \\V=\frac{935.421}{3}\\ V=311.8$

add the volumes together:

$Vol=247.1+311.8\\Vol=558.9$

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5/9 - 2/5 = and what is 1/2-1/9 =

Arada [10]

Answer: 7/45, 7/18

Step-by-step explanation:5/9 - 2/5 = 25/45 - 18/45 = 25 - 18/45 = 7/45

and 1/2 - 1/9 = 9/18 - 2/18 = 7/18

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3 years ago

Please answer the questions

Naily [24]

Answer:

1/18

Step-by-step explanation:

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3 years ago

Increase £40 by 15%

matrenka [14]

Answer:

£46

Step-by-step explanation:

40 increased by 15 percent is because 15 percent of 40 is 6

adding this increase to it makes it 46 pounds

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3 years ago

Pygmies do not plant their own , but they will work in them in exchange for food or tools

Lady_Fox [76]

I’m not sure where the question is here, but if it is a true or false, the pygmies do exchange with neighboring villages. They are hunters and gatherers, so rather than planting food, they gather. So this statement would be true

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3 years ago

Read 2 more answers

PLEASE HELP ME PLEASE!!!

dimaraw [331]

Answer:

Step-by-step explanation:

Let's just check something out before we continue to fill in the blanks.

The zeros are (x - 1) and (x -5)

y = (x - 1)(x - 5) Remove the brackets.

y = x^2 - 6x + 5 Complete the square

y = (x^2 - 6x + 9) + 5 - 9

y = (x - 3)^2 - 4

So we have a minumum at (3, - 4) Now we can go through the rest of the questions.

Part A

(1,0) and (5,0)

Part B

The vertex is (3, - 4) See the completed square above.

Part C

It's a minimum. It is the point between the two roots on the x axis. The vertex drops below the x axis.

Part D

The axis of symmetry goes through the x value of the minimum.

x = 3

The answers are all in parts A B C D. I leave you to figure out where to put them. You should be able to do that.

4 0

3 years ago