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3 years ago

The curved surface area of a cylinder is

Mathematics

1 answer:

wel3 years ago

5 0

9514 1404 393

Answer:

414.5 cm³

Step-by-step explanation:

The lateral area of a cylinder is given by the formula ...

LA = 2πrh

Then the radius is ...

r = LA/(2πh)

The volume of the cylinder is given by ...

V = πr²h

Using the above expression for r, this becomes ...

V = π(LA/(2πh))²h = LA²/(4πh)

V = (250 cm²)²/(4π·12 cm) ≈ 414.47 cm³

The volume of the cylinder is about 414.5 cm³.

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-3/10b=2/5 what is b in this equation

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3 years ago

Read 2 more answers

Refer to the previous exercise. The researchers wanted a sufficiently large sample to be able to estimate the probability of pre

Maru [420]

Answer:

The large sample n = 117.07

Step-by-step explanation:

Step(i):-

Given that the estimate error (M.E) = 0.08

The proportion (p) = 0.75

q =1-p = 1- 0.75 =0.25

Level of significance = 0.05

Z₀.₀₅ = 1.96≅ 2

Step(ii):-

The Marginal error is determined by

M.E = $\frac{Z_{0.05} \sqrt{p(1-p)} }{\sqrt{n} }$

$0.08 = \frac{2 X \sqrt{0.75(1-0.75)} }{\sqrt{n} }$

Cross multiplication , we get

$\sqrt{n} = \frac{2 X \sqrt{0.75(1-0.75)} }{0.08 }$

√n = $\frac{2 X0.4330}{0.08} = 10.825$

squaring on both sides , we get

n = 117.07

Final answer:-

The large sample n = 117.07

6 0

3 years ago

Given the set of ordered pairs: {(1,3), (2,7), (x,5), (6,4)}.

MrMuchimi

Answer:

Step-by-step explanation:

2 is a value of x that would not make the set a function because a function can't have multiple coordinates wit hthe same domain (x-coordinate). 2 is a domain that has already been used in the point (2,7). If this is used in (x,5), the point would become (2,5) and repeat a domain.

Note:

The x-coordinate could also be 1 or 6 because they have been used as domains as well.

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3 years ago

Plzz help i don't understand that well

postnew [5]

Answer:

Step-by-step explanation:

A triangle's lengths HAVE TO add up to 180 degrees.

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3 years ago

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Julie bought a binder for $4 and several packs of paper that cost $0.70 each. If her total was $11.70, how many packs of paper d

timofeeve [1]

11 packs of paper is the answer

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3 years ago