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4 years ago

What x what x what = 450

Mathematics

2 answers:

Radda [10]4 years ago

6 0

Answer:

7.66309432

Step-by-step explanation:

I'm assuming that "what" are all the same numbers.

Therefore, you would need to find the ∛450

This is approximately 7.66309432

garik1379 [7]4 years ago

4 0

Answer:

9x5x10 = 450

Step-by-step explanation:

9x5 = 45

45x10 = 450

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Answer:

2. b : l

3. 20cm

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Step-by-step explanation:

<u>Solution 2:</u>

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$2\pi r = l\\\Rightarrow r = \dfrac{l}{2\pi}$

Volume of a cylinder is given as:

$V = \pi r^{2} h$

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$V_2 = \pi (\dfrac{l}{2\pi})^2 b\\\Rightarrow V_2 = (\dfrac{l^2}{4\pi}) b$

Taking ratio:

$V_1:V_2 = \dfrac{(\dfrac{b^2}{4\pi}) l}{(\dfrac{l^2}{4\pi}) b} = b:l$

Solution 3:

Rectangle is rolled along its length to make a cylinder, so height will be equal to its length.

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Solution 4:

Side of square = 7 cm

Height of cylinder =Side of square = 7 cm

7 cm will be the circumference of the circle.

i.e. $2\pi r$ = 7 cm

Curved surface area of a cylinder:

$CSA = 2\pi rh$

Putting the above values:

CSA = 7 $\times$ 7 = 49 $cm^{2}$

Solution 5:

As calculated in above step:

CSA = $2\pi rh =$ 7 $\times$ 7 = 49 $cm^{2}$

Total surface area = $2\pi r^{2} + 2\pi r h$

Calculating value of r:

$2\pi r$ = 7 cm

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Total surface area =

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