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2 years ago

The population of a certain city is decreased by 5332 in 20 years express the change in population per year as a unit rate

Mathematics

1 answer:

3241004551 [841]2 years ago

5 0

Answer:

266.6 per year

Step-by-step explanation:

53392 / 20 = 266.6

= 266.6 per year

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The math says expand 5(2-7x) what is the answer

kow [346]

Step-by-step explanation:

in my opinion

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a group of students decided to collect as many paise (1/100 RS.) from each member of the group as is the number of members. If t

Softa [21]

Answer:

Let the no. Of members be x

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2 years ago

The height of a right circular cylinder is 1.5 times the radius of the base. What is the ratio of the total surface area to the

Naily [24]

Let r represent the radius of cylinder.

We have been given that the height of a right circular cylinder is 1.5 times the radius of the base. So the height of the cylinder would be $1.5r$ .

We will use lateral surface area of pyramid to solve our given problem.

$LSA=2\pi r h$ , where,

LSA = Lateral surface area of pyramid,

r = Radius,

h = height.

Upon substituting our given values in above formula, we will get:

$LSA=2\pi r\cdot (1.5)r$

Now we will find the total surface area of cylinder.

$TSA=2\pi r(r+h)$

$TSA=2\pi r(r+1.5r)$

$TSA=2\pi r(2.5r)$

$\frac{TSA}{LSA}=\frac{2\pi r(2.5r)}{2\pi r(1.5r)}$

$\frac{TSA}{LSA}=\frac{2.5r}{1.5r}$

$\frac{TSA}{LSA}=\frac{25}{15}$

$\frac{TSA}{LSA}=\frac{5}{3}$

Therefore, the ratio of total surface area to lateral surface area is $5:3$ .

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2 years ago