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3 years ago

How do i solve an area and volume

2 answers:

7 0

It depends on the shape or figure your trying to find it for.
Area- the area of a flat or plane figure is the number of unit squares that can be contained in it.
Volume- Is the measure of the amount of space in a closed figure.

inna [77]3 years ago

7 0

The formula for the area of any regular polygon is 1/2 the product of the apothem and the perimeter. The area of a circle is $\pi r^{2}$ with the r standing for "radius".

The formula for the volume of any prism or cylinder is the area of the base times the height of the prism or cylinder. The volume for a sphere is 4/3 the product of $\pi r^{2}$ with the r standing for radius.

There are countless other formulas for volume and area, so if the one you are looking for is not here please comment the formula you're looking for and I'll happily supply you with it!

You might be interested in

Which description does NOT guarantee that a quadrilateral is a square?

Ivahew [28]

Let's go through the choices one by one

------------------------------------------
Choice A

If all sides are congruent, then this figure is a rhombus (by definition). If all angles are congruent, then we have a rectangle. Combine the properties of a rhombus with the properties of a rectangle and we have a square.

In terms of "algebra", you can think
rhombus+rectangle = square

Or you can draw out a venn diagram. One circle represents the set of all rhombuses; another circle represents the set of all rectangles. The overlapping region is the set of all squares. The overlapping region is inside both circles at the same time.

So we can rule out choice A. This guarantees we have a square when we want something that isn't a guarantee.

------------------------------------------
Choice B

If we had a parallelogram with perpendicular diagonals, then we can prove that we have a rhombus (all four sides congruent). However, we don't know anything about the four angles of this parallelogram. Are they congruent? We don't know. So we can't prove this figure is a rectangle. The best we can say is that it's a rhombus. It may or may not be a rectangle. There isn't enough info about the rectangle & square part.

This is why choice B is the answer. We have some info, but not enough to be guaranteed everytime.

------------------------------------------
Choice C

This is a repeat of choice A. Having "all right angles" is the same as saying "all angles congruent". This is because "right angle" is the same as saying "90 degrees". So we can rule out choice C for identical reasons as we did with choice A.

------------------------------------------
Choice D

As mentioned before in choice A, if we know that a quadrilateral is a rectangle and a rhombus at the same time, then the figure is also a square. This is always true, so we are guaranteed to have a square. We can cross choice D off the list.

------------------------------------------

Once again, the final answer is choice B

3 0

3 years ago

18 Andy flies from the UK to Japan.

kotykmax [81]

Answer:

Leila pays more than Andy to fly from the UK to Australia.

Step-by-step explanation:

Given:

Andy flies from the UK to Japan.

His plane ticket costs £554.

Andy then flies from Japan to Australia.

His plane ticket costs 70 140 Japanese Yen.

The exchange rate is £1 = 140 Japanese Yen.

Leila flies from the UK to Australia.

Her plane ticket costs 1860 Australian dollars.

The exchange rate is 1 Australian dollar = £0.62.

Now, to find Andy or Leila who pays more to fly from the UK to Australia.

Andy flies from the UK to Japan.

His plane ticket costs = £554.

Andy then flies from Japan to Australia.

His plane ticket costs 70 140 Japanese Yen.

The exchange rate is £1 = 140 Japanese Yen.

So, by using conversion factor we convert Japanese Yen to £.

140 = £1

70140 = $70140\div 140=\£501.$

His plane ticket costs = £501.

Now, adding both the cost of tickets:

$501+554=\£1055.$

Andy total pays fly from the UK to Australia is £1055.

Now, to get the cost of plane ticket of Leila from the UK to Australia.

Her plane ticket costs 1860 Australian dollars.

The exchange rate is 1 Australian dollar = £0.62.

So, by using conversion factor:

1 Australian dollar = £0.62

1860 Australian dollar = $1860\times 0.62=\£1153.2$

Her plane ticket costs is £1153.2.

As, we see that cost of plane ticket of Andy is £1055 and cost of plane ticket of Leila is £1153.2.

Thus, Leila pays more.

Therefore, Leila pays more than Andy to fly from the UK to Australia.

4 0

3 years ago

Hello, please help thank youu!!

uranmaximum [27]

Answer:

36 $\frac{1}{2}$

Step-by-step explanation:

(5 $\frac{1}{2}$ x 3) + (10 ÷ $\frac{1}{2}$ )

(16 $\frac{1}{2}$ ) + (10 ÷ $\frac{1}{2}$ )

(16 $\frac{1}{2}$ ) + (20)

36 $\frac{1}{2}$

7 0

2 years ago

Read 2 more answers

Prove that a triangle with two congruent altitudes is an isoceles triangle.

miskamm [114]

Answer:

See image

Isosceles triangles have 2 congruent base angles

7 0

2 years ago

Sam read 20 pages, which is 2/3 of the book. How many pages are there in the book?

OlgaM077 [116]

Answer:

30pages

Step-by-step explanation:

20 is 2/3 so 10 is 1/3 so 3/3 is one book

5 0

2 years ago

Read 2 more answers