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2 years ago

How can you find the area of an irregular polygon using area formulas?

1 answer:

6 0

Divide the polygon into separate shapes. Like a rectangle and then a triangle.
find the areas of those shapes and then add them together.

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The dimensions of rectangle A are four times the dimensions of rectangle B. The area of rectangle B is 162 cm2. What is the area

Anna [14]

Answer:

2,592 square cm.

Step-by-step explanation:

It is given that the dimensions of rectangle A are four times the dimensions of rectangle B.

Let dimensions of rectangle B are l×b.

So, the dimensions of rectangle A are 4l×4b.

Area of rectangle is

$Area=length\times width$

Area of rectangle B is

$A_B=l\times w$

The area of rectangle B is 162 square cm.

$A_B=l\times w=162$

Area of rectangle A is

$A_A=4l\times 4w=16(l\times w)=16(162)=2592$

Therefore, the area of rectangle A is 2,592 square cm.

3 0

2 years ago

The elective courses for next year are gym, shop, art, consumer science, criminal justice, and computer science. Amber needs to

Nezavi [6.7K]

Answer:

She can choose her electives in 20 ways.

Step-by-step explanation:

The order in which she chooses the courses is not important, which means that the combinations formula is used to solve this question.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

How many ways can she choose her electives?

3 electives from a set of 6. So

$C_{6,3} = \frac{6!}{3!(6-3)!} = 20$

She can choose her electives in 20 ways.

3 0

2 years ago

The school athletic director has a storage closet that 4 1/2 feet long, 2 2/3 feet deep, and 6 feet tall. a. She wants to put a

BabaBlast [244]

Answer and Explanation:

The closet is 4 1/2 feet long, 2 2/3 feet deep, and 6 feet tall

Since we are not given width of the closet, we assume the base of the closet has equal width and length = 4 1/2 feet(closet base is a square)

Closet is 2 2/3 feet deep and 6 feet tall, therefore closet height internal = 8 2/3 feet

a. How much carpeting will she need?

The carpeting needed for the closet = area of base of the closet(square base)= 4 1/2* 4 1/2 = 4.5*4.5= 20.25 square feet

b. The athletic director wants to store cube boxers that are 1/2 foot wide. How many boxers will the storage hold?

Area of base = 20.25

Area of base of each cube on the floor = 0.5*0.5= 0.25

So we know that the base of the closet will hold

20.25/0.25= 81 boxer cubes

Or we could straight to the point

Find volume of the closet( the closet is clearly a cuboid) and divide by the volume of one cube to find number of cubes that will fit into the closet

Volume of the closet/cuboid = l*w*h =4.5*4.5*8.67/0.25

=702.27

Therefore number of boxer cubes to fit in closet= 702

8 0

1 year ago

How to find the mean

Marta_Voda [28]

Mean is another word for average add all the values and divide by the numbers in the set

7 0

2 years ago

Read 2 more answers

90 is 30% of what number

leva [86]

Answer: 300. . . . . . . . .

4 0

2 years ago

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