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3 years ago

- What is the difference between area and perimeter?

Mathematics

2 answers:

allsm [11]3 years ago

6 0

Answer:

Perimeter is a length of a figure's borders.

Pabc = a+b+c

Area shows the 'size' of the figure.

Sabc = 1/2*a*b*Sin(alpha) or 1/2*a*h or sqrt((half perimeter * a)(half perimeter * b)(half perimeter * c))

coldgirl [10]3 years ago

5 0

Area is the amount of surface that a shape covers. Area is measured in square units and it’s a very important math concept.

Perimeter is the distance around a figure. When I think of the word perimeter, I think of the word “rim” which is the outside of something like a basketball hoop.

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Sherri’s trellis is shown.

Eddi Din [679]

Answer:

A and C

Step-by-step explanation:

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3 years ago

Factorise x^3+3x^2y+3xy^2+y^3

Nesterboy [21]

Answer:

(x + y)³

Step-by-step explanation:

use (a + b)³ = a³ + 3a²b + 3ab² + b³

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= (x + y)³

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3 years ago

What is 20+ 20+2-27+100

bonufazy [111]

It equals 169

Anyways thanks for points

5 0

3 years ago

Read 2 more answers

The height of a small rock falling from the top of a 124-ft-tall building with an initial downward velocity of –30 ft/sec is mod

Contact [7]

Answer:

Option 3.

Step-by-step explanation:

The given function is

$h(t)=-16t^2-30t+124$

where, h(t) is the height of a small rock falling from the top of a 124-ft-tall building and t is the time in seconds.

It is a downward parabola.

Equate the function equal to 0, to find the time at which the rock touch the ground.

$-16t^2-30t+124=0$

If $ax^2+bx+c=0$ , the according to the quadratic formula

$x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}$

Using quadratic formula, we get

$t=\dfrac{-(-30)\pm \sqrt{(-30)^2-4(124)(-16)}}{2(-16)}$

$t=\dfrac{30+\sqrt{(-30)^2-4(124)(-16)}}{2(-16)},\dfrac{30-\sqrt{(-30)^2-4(124)(-16)}}{2(-16)}$

$t=-3.875, 2$

Time cannot be negative. So, the rock remain in the air in the interval 0 < t < 2.

Therefore, the correct option is 3.

6 0

3 years ago

A newspaper reports the following changes in the temperature of a city over 4 days:

Alexeev081 [22]

9514 1404 393

Answer:

a) (2.64 -2/9 -0.35 +5/8)/4

b) perform the sum, then the division, then round as needed

Step-by-step explanation:

a) The average of a number of items is their sum, divided by the number of items. Here, we want the average of 4 changes, so we compute it as the sum of the changes divided by 4.

average change = (2.64 -2/9 -0.35 +5/8)/4

b) My calculator is capable of adding these numbers directly. For a result rounded to the nearest hundredth, it can be a good idea to represent the fractions using at least 3 decimal digits.

So, the steps would be ...

convert fractions to their decimal equivalents, using 3 decimal digits
add up the values
divide by 4
round to hundredths

Performing these steps, we get ...

average change = (2.64 -0.222 -0.35 +0.625)/4 = 2.693/4

average change ≈ 0.67 . . . degrees

The average daily temperature change of a city was 0.67 degrees.

6 0

3 years ago

- What is the difference between area and perimeter?​

- What is the difference between area and perimeter?