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2 years ago

The volume of this cone is 36 cubic units. What is the volume of a cylinder that has the same base area and the same height?

Mathematics

1 answer:

goldenfox [79]2 years ago

7 0

Answer: 108pi

Step-by-step explanation:

36pi times 3

this is correct btw

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If the if a cylinder is 7 in tall and has a volume of 63 Pi inches what is the area of the cross section it goes right down the

vitfil [10]

Answer: $9\pi \ in.^2$

Step-by-step explanation:

Given

The height of the cylinder is $h=7\ in.$

The volume of the cylinder is $V=63\pi \ in.^3$

The volume of the cylinder is the product of area and height

$\Rightarrow V=\pi r^2h\\$

Insert the values

$\Rightarrow 63\pi =A\times 7\\\\\Rightarrow A=\dfrac{63\pi}{7}\\\\\Rightarrow A=9\pi\ in.^2$

Thus, the area of the cross-section is $9\pi \ in.^2$

7 0

2 years ago

Can someone help me really please

JulsSmile [24]

Answer:

Step-by-step explanation:

Let x represent the missing number

$8\frac{11}{15} = 7\frac{x}{15}$

Convert both fractions to improper fractions

$\frac{131}{15} = \frac{105 + x}{15}$

Cross multiply

$15(105 + x) = 15(131)$

$1,575 + 15x = 1,965$

Subtract both sides by 1,575

$15x = 1,965 - 1,575$

$15x = 390$

Divide both sides by 15

$x = \frac{390}{15}$

x = 26

4 0

2 years ago

The radius of a circular sign is 17 inches. Equal parts of the sign are painted green and brown. How many square inches are pain

LenaWriter [7]

Answer:

453.7 in^2 for each color

Step-by-step explanation:

Answer this by finding the area of the whole circle and then dividing that by 2:

(3.14)(17 in)^2 / 2

or:

453.7 in^2 for each color

PS: It's ' pi ' not "pie"

7 0

3 years ago

Read 2 more answers

Algebra 2 help!! Find the value of k

Oksana_A [137]

13 By the factor theorem, if the function is divisible by x - 3 then f(3) = 0. So we have:-

2(3)^3 + k(3)^2 + 7(3) - 3 = 0

9k = 3 - 21 - 54 = -72

k = -72/9 = -8 answer

14. Similarly , f(-4) = 0 , so we have:-

(-4)^3 + 9(-4)^2 + k(-4) - 12 = 0

-64 + 144 - 4k - 12 = 0

4k = -64 + 144 - 12 = 68

k = 68/4

k = 17 answer

4 0

3 years ago

What is the value of -2.12 - 6.84 + 4.19?

hodyreva [135]

Answer:

Try 8.91

Step-by-step explanation:

6.84+4.19=11.03-2.12=8.91

8 0

3 years ago