1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Rom4ik [11]
2 years ago
13

Find the area of the shaded polygons

Mathematics
1 answer:
muminat2 years ago
6 0

Answer:

  4 square units

Step-by-step explanation:

The vertices of the figure are on grid points, so it is appropriate to use Pick's theorem to find the area.

__

<h3>formula</h3>

Pick's theorem tells you the area is ...

  A = i +b/2 -1

where i is the number of grid points interior to the figure (0), and b is the number of grid points on the boundary (10).

<h3>application</h3>

Using the counted values in the formula, we find the area to be ...

  A = 0 +10/2 -1 = 4

The area of the polygon is 4 square units.

_____

<em>Additional comment</em>

There are several other ways to find the area. Here are a couple:

<u>decompose the figure</u>

A horizontal line 1 unit up from the bottom will divide the figure into a trapezoid and a triangle. The trapezoid has bases 4 and 1, and height 1, so its area is ...

  A = 1/2(b1 +b2)h = 1/2(4 +1)(1) = 5/2

The triangle has base 1 and height 3, so its area is ...

  A = 1/2bh = 1/2(1)(3) = 3/2

Then the total area is 5/2 +3/2 = 8/2 = 4 square units.

<u>subtract empty space</u>

The figure occupies a 4×4 square with triangles removed from the left side and the top. Each of those triangles has a base of 4 and a height of 3. The remaining (shaded) area is ...

  A = s² -1/2bh -1/2bh

  A = 4² -1/2(4)(3) -1/2(4)(3) = 16 -12 = 4 square units

You might be interested in
Order from least to greatest 1/8, 7/8, 4/8
atroni [7]

first 1/8 then 4/8 and lastly 7/8
8 0
3 years ago
Read 2 more answers
please help! this is for a grade and its overdue!!!!!!!! If the blueprint is drawn on the coordinate plane with vertices (1, 5)
viktelen [127]

Answer:

50 \sqrt[]{2} feet

Step-by-step explanation:

Given the vertices  (1, 5) and (11, 15) for the corners labeled with red stars, the diagonal of the square C will be the length of the line joining the two vertices.

Using the Distance Formula:

Since 1 Square Unit = 25 Square Feet

1 Unit =5 feet

Therefore, the length of the diagonal

7 0
3 years ago
Read 2 more answers
Convert 1.5 kg to g.
KiRa [710]
The answer is 1500g. There are 1000 grams in a kilogram so 1.5 x 1000 = 1500.
6 0
3 years ago
Read 2 more answers
What are the rules for these problems?
Rudiy27
The answer to number 3 is -12 because you would do X times 4 and then add 8

the answer to number 4 is 46 because you would do X times 3 and then add 7
4 0
3 years ago
NOTE -- THIS QUESTION HAS BEEN ANSWERED ALREADY!!!
DanielleElmas [232]

Answer:

The cubic polynomial is: x³ - x² - 6x.

Step-by-step explanation:

Given the degree and the roots of the polynomial we can find it.

An n - degree polynomial has n roots.

Here, given that the degree of the polynomial is 3 and three roots are given. Also, if (x - a) is a factor of a polynomial then x = a is a root of the polynomial. The converse is also true.

Since, the roots of the polynomial are given to -2, 0, 3 then it should have had the following factors.

(x + 2)(x - 0)(x - 3) = 0

Multiplying them we get:

⇒ $ (x^2 + 2x)(x - 3) $

$ = x^3 - 3x^2 + 2x^2 - 6x $

$ = x^3 - x^2 - 6x $ which is the required cubic polynomial.

Hence, the answer.

4 0
3 years ago
Other questions:
  • In order to qualify for a role in a play, an actor must be taller than 64 inches but shorter than 68 inches. The inequality 64 &
    15·2 answers
  • Wendy described four triangles as shown below:
    10·2 answers
  • The random variable is x represents the number of cars per household in a town of 1000 households, find the probability of rando
    8·1 answer
  • An isosceles trapezoid has base angles of 45° and bases of lengths 8 and 14. The area of the trapezoid is
    9·1 answer
  • Write an equation with the two points: (5,-2) and (3,4)
    12·1 answer
  • 1+4=5 2+5=12 3+6=21 8+11=?
    6·1 answer
  • A two-digit number becomes 5/6 of the reversed number obtained when the digits are interchanged. The difference between the digi
    8·1 answer
  • PLZ HELP NO ONE HAS BEEN ABLE TO HELP ME
    11·1 answer
  • What is the value of k?
    13·1 answer
  • Find three consecutive number whose sum shall equal 45
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!