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
saw5 [17]
3 years ago
6

Help solving this math

Mathematics
1 answer:
9966 [12]3 years ago
6 0

Answer:

  1. 24 cm²
  2. 6400 -1600π ≈ 1373.45 square units

Step-by-step explanation:

1. You can look at this several ways.

It can be considered to be a stack of 1+2+3 = 6 squares that are 2 cm on a side, so have a total area of 6 × (2 cm)² = 24 cm².

You can lop off one of the squares sticking out and put it into the empty corner to form a 6 cm by 4 cm rectangle with an area of (6 cm)(4 cm) = 24 cm².

You can consider it to be a 6 cm square with 3 squares cut out of it that are 2 cm on a side: (6 cm)² -3(2 cm)² = (36 -12) cm² = 24 cm².

__

2. The shaded area is the difference in areas of a square 80 units on a side and a circle of 40 units radius. If we let d represent the side dimension of the square, then the area formulas are ...

  Square area = d²

  Circle area = π(d/2)²

So the difference area is ...

  shaded area = d² -(π/4)d² = d²(1 -π/4)

For d=80, the shaded area is ...

  shaded area = 80²(1 -π/4) = 6400 -1600π ≈ 1373.45 square units

You might be interested in
JELP HELP HELP HELP<br> HELP HELP HELP<br> 5TH GRADE<br> HELP
sergey [27]

Answer: A 729

Step-by-step explanation:

5 0
2 years ago
What is the distance between -12 and 3
lesantik [10]
15 units because I need to have
3 0
3 years ago
I need to know how to solve the problem:<br><br><br>3/2x+1/5x=11/6x-2/15
Schach [20]
3/2x + 1/5x = 11/6x - 2/15....to get rid of fractions, multiply by common denominator, which is 30.

45x + 6x = 55x - 4
51x = 55x - 4
51x - 55x = -4
-4x = -4
x = -4/-4
x = 1

4 0
3 years ago
Read 2 more answers
Which are not lengths of a right triangle?
zubka84 [21]
It’s D Have Ah Good Day
8 0
3 years ago
How? Just how I'm horrible at math​
Oksanka [162]

Answer:

<h3>c)</h3><h3>\frac{x + 2}{x - 3} . \frac{4}{x + 2}</h3>

3 0
3 years ago
Other questions:
  • Which number line represents the solutions to |–2x| = 4?
    14·1 answer
  • What is 7.5 quarts in pints
    13·1 answer
  • Who can prove that ? :D<br><br> prove that lim x about 0 (sin(x)/x)=1<br> by using sandwich theorem
    6·1 answer
  • The key club made $192 at their candle sale.They sold round candles for $4 and square candles for $6.If they sold twice as many
    9·2 answers
  • if my medical expenses are $40,000 per year for 35 years with an increase of 6% a year what is the total amount?
    13·1 answer
  • F(x) = x2 + 5x - 1 is shifted 3 units left. The result is g(x). What is g(x)?
    7·1 answer
  • The land area of a country is about 3.5 million square miles and the population is about 200 million people. What is the average
    6·2 answers
  • Pleasee can you do this <br>pleasee​
    15·1 answer
  • What is the solution to the equation? √x+3=12
    7·2 answers
  • You go to a shoe store planning to buy a new pair of the latest Yeezy drop. A pair is selling around for $250. However you have
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!