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
Usimov [2.4K]
3 years ago
5

What is the area of the black section?

Mathematics
1 answer:
NeX [460]3 years ago
7 0
You can split this up into 3 parts:

The large triangle with base 16cm and height 24.3cm has an area:
A = 1/2bh
A = 0.5x16x24.3
A = 194.4cm²

One of the other triangles with base 13.5cm and height 12cm has an area:
A = 0.5x12x13.5
A = 81cm²

The last triangle with base 13.5cm and height 5cm has an area:
A = 0.5x13.5x5
A = 33.75cm²

So you have 3 triangle areas. To get the black area, you subtract the two white triangles (in your picture) from the area of the large triangle that was first calculated above so:

Black area = 194.4 - 81 - 33.75 = 79.65cm²
That should be the area... I might have messed up on the basic multiplication, but that's the overall process.
You might be interested in
The distance between two points is 6_/6.One endpoint is (4,-1). It is known that the y-coordinate of the other endpoint is 9.
babunello [35]

The x-coordinate of the given endpoint will be "x = 4 \pm 2\sqrt{29}".

According to the question,

The end points are:

  • (x_1,y_1) = (4,-1)
  • (x_2, y_2) = (x,9)

Distance,

  • 6\sqrt{6}

As we know,

The distance formula,

→ Distance = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

By substituting the values, we get

→         6\sqrt{6} = \sqrt{(x-4)^2+(9+1)^2}

→          216= (x-4)^2+100

→   (x-4)^2 = 116

→       x-4 = \pm \sqrt{116}

→       x-4=\pm 2\sqrt{29}

→             x = 4 \pm 2\sqrt{29}                

Thus the above answer is right.  

Learn more:

brainly.com/question/18310956

5 0
2 years ago
The triangle below has a total perimeter of 450 cm:
Korvikt [17]
Equation: 450 = 128 + 150 + n

work:

1st step:
128+150 = 278

2nd step:
450-278 = 172

answer: 172

3rd step (checking) :
450 = 128 + 150 + 172
450 = 278 + 172
450 = 450

3 0
3 years ago
Solve system of equation 4b-2d=5, -2b+d=1
Fed [463]

Answer:

no solution

Step-by-step explanation:

3 0
3 years ago
Please Help me and answer quickly
Lorico [155]

Answer:

300 i think hope it helps

4 0
2 years ago
Gerry has a piece of poster board that is 3 feet wide. He wants to draw columns on the poster board so that each column is 1/6 o
SashulF [63]

Answer:

A.2

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • For every 2 dogs at the vet there are 3 cats if there 6 dogs at the vet how many cats are there?
    11·1 answer
  • 2 1/3 - 1 1/3 PLEASE ANSWER MY HOMEWORK IS DUE IN 10 MINUTES
    10·1 answer
  • Pls help idk what to do
    14·1 answer
  • What are the real or imaginary solutions of the polynomial equation x^4-52x^2+576?
    13·2 answers
  • 135 pizzas cost $1,405, how much does just 1 pizza cost?
    13·2 answers
  • Define the simplest form of a rate
    13·1 answer
  • 15 is what percentage of 25
    5·2 answers
  • A factory makes orange paint by mixing red paint and yellow paint in the ratio 7:2. The factory makes 2700 litres of orange pain
    11·1 answer
  • A right triangle has side lengths 5, 12, and 13 as shown below. Use these lengths to find cos B, tanB, and sin B. (Plz I need he
    11·1 answer
  • If tanθ= 2/5 find cosθ using identities. This is in quad. 1.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!