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4 years ago

Which of the following formulas would find the lateral area of a right cylinder with height equal to h and r as the radius?

Mathematics

2 answers:

vovangra [49]4 years ago

8 0

Answer:

Answer: LA=2pie rh

Step-by-step explanation:

ehidna [41]4 years ago

3 0

Answer:

Lateral surface area of right cylinder = 2 * π * radius * height.

Step-by-step explanation:

Given : A right cylinder with height equal to h and r as the radius.

To find : Which of the following formulas would find the lateral area.

Solution : We have given that height of cylinder = h

radius of cylinder = r.

Lateral surface area of right cylinder = 2 * π * radius * height .

Formula for LA = 2πrh.

Therefore, Lateral surface area of right cylinder = 2 * π * radius * height.

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How much surface area would be lost if you glued three 4-cm cubes together to make a rod that is three cubes long and one cube w

Kipish [7]

Answer:

Part 3) $SA=288\ cm^2$

Part 4) $64\ cm^2$

Step-by-step explanation:

Part 3) Calculate the total surface area of three 4 cm cubes

we know that

The surface area of a cube is equal to the area of its six square faces

$SA=6b^2$

The surface area of three cubes is equal to the area of its 18 square faces

$SA=18b^2$

where

b is the length side of the square face

In this problem

$b=4\ cm$

The surface area of three cubes is

$SA=18b^2$

substitute the given value

$SA=18(4)^2$

$SA=288\ cm^2$

Part 4) How much surface area would be lost if you glued three 4-cm cubes together to make a rod that is three cubes long and one cube wide?

In this case the total surface area of the three glued 4-cm cubes is equal to the area of its 14 square faces

The surface area lost is equal to

$18b^2-14b^2=4b^2$

substitute

$4(4)^2=64\ cm^2$

6 0

3 years ago

Answer this question please and thank you

Illusion [34]

Answer:

The first selection should be "all factors", and the second should be "only the prime factors."

Step-by-step explanation:

I'm guessing you already submitted your answers, since this question is a few days old, but in case someone looks at it later & needs it...

3 0

3 years ago

Please, guys, help me out.

Maru [420]

Answer:

First we need to calculate ∠R

Since ∠R is one of three angles of ΔRDJ, we have:

∠R + ∠D + ∠J = 180°

∠R = 180° - ∠D - ∠J

∠R = 180° - 83° - 39° = 58°

Since ΔRDJ ~ ΔTRB, we can con conclude that:

∠R = ∠T

Because ∠R = 58°

=> ∠T = 58°

7 0

3 years ago

Read 2 more answers

Can someone help me out

Svetradugi [14.3K]

The answer is g4 -2 hope this helps

6 0

4 years ago

Read 2 more answers

Compute the standard error for sample proportions from a population with proportion p= 0.55 for sample sizes of n=30, n=100 and

Pani-rosa [81]

Given Information:

Population proportion = p = 0.55

Sample size 1 = n₁ = 30

Sample size 2 = n₂ = 100

Sample size 3 = n₃ = 1000

Required Information:

Standard error = σ = ?

Answer:

$\sigma_1 = 0.091$

$\sigma_2 = 0.050$

$\sigma_3 = 0.016$

Step-by-step explanation:

The standard error for sample proportions from a population is given by

$\sigma = \sqrt{\frac{p(1-p)}{n} }$

Where p is the population proportion and n is the sample size.

For sample size n₁ = 30

$\sigma_1 = \sqrt{\frac{p(1-p)}{n_1} }$

$\sigma_1 = \sqrt{\frac{0.55(1-0.55)}{30} }$

$\sigma_1 = 0.091$

For sample size n₂ = 100

$\sigma_2 = \sqrt{\frac{p(1-p)}{n_2} }$

$\sigma_2 = \sqrt{\frac{0.55(1-0.55)}{100} }$

$\sigma_2 = 0.050$

For sample size n₃ = 1000

$\sigma_3 = \sqrt{\frac{p(1-p)}{n_3} }$

$\sigma_3 = \sqrt{\frac{0.55(1-0.55)}{1000} }$

$\sigma_3 = 0.016$

As you can notice, the standard error decreases as the sample size increases.

Therefore, the greater the sample size lesser will be the standard error.

8 0

4 years ago