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
serious [3.7K]
3 years ago
6

A rectangular piece of paper measuring 25cm by 21cm is

Mathematics
2 answers:
timurjin [86]3 years ago
6 0
The surface area is the area of the rectangle - it has been rolled so no different.

25 x 21 = 525 cm^2
kvasek [131]3 years ago
4 0

The area of the piece of paper is (25cm x 21cm) =  525 cm² .

There's no reason it should change when you bend the paper
into different shapes.
You might be interested in
A communications channel transmits the digits 0 and 1. However, due to static, the digit transmitted is incorrectly received wit
m_a_m_a [10]

Answer:

The probability that the message will be wrong when decoded is 0.05792

Step-by-step explanation:

Consider the provided information.

To reduce the chance or error, we transmit 00000 instead of 0 and 11111 instead of 1.

We have 5 bits, message will be corrupt if at least 3 bits are incorrect for the same block.

The digit transmitted is incorrectly received with probability p = 0.2

The probability of receiving a digit correctly is q = 1 - 0.2 = 0.8

We want the probability that the message will be wrong when decoded.

This can be written as:

P(X\geq3) =P(X=3)+P(X=4)+P(X=5)\\P(X\geq3) =\frac{5!}{3!2!}(0.2)^3(0.8)^{2}+\frac{5!}{4!1!}(0.2)^4(0.8)^{1}+\frac{5!}{5!}(0.2)^5(0.8)^0\\P(X\geq3) =0.05792

Hence, the probability that the message will be wrong when decoded is 0.05792

4 0
3 years ago
Sorry last question :(
elena55 [62]
Area of rectangle=30•12=360 square meters
Area of semicircle=3.14•15•15=353.25 square meters
360+353.25=713.25 square meters
6 0
4 years ago
Hi right now im doing homework about common denominators and for some reason I cant understand how to do it
goldenfox [79]
It would be great if you added some more details, but for common denominators you try to find the least common number that the 2 or more of the numbers you got have!
For example:
1/2 and 2/3 if you multiply 2 by 3 and 3 by 2, they both are 6, so you would multiply 1/2 both by 3 to make it into 3/6 and 2/3 by 2 to make it into 4/6!
6 0
3 years ago
Read 2 more answers
Help please please help
Semenov [28]

Answer:

Step-by-step explanation:

1,8

5,7

2,3

3 0
3 years ago
Read 2 more answers
If you add the digits in a two-digit number and multiply the sum by 7, you get the original number. If you reverse the digits in
erik [133]
I got 42.......................

8 0
3 years ago
Other questions:
  • (3,-2) translated (5,-9)
    12·1 answer
  • Pls Help the questions are on the picture
    7·1 answer
  • The Pennington and Williams family each went on road trips this summer. Their mileage is shown in the graph
    5·1 answer
  • If f(x) = √x + 12 and g(x) = 2√x, what is the value of (f-g)(144)?<br><br> -84<br> –60<br> 0<br> 48
    11·2 answers
  • Factor completely.<br><br> 48y^2 + 82y – 70<br><br> please help and show work. super confused :P
    8·1 answer
  • Please Help!!!!!!<br> I need the answer ASAP!
    15·1 answer
  • elmo has 5 donuts, he cuts them into halves. then he cuts those halves into thirds, then he cuts those thirds in halves. how muc
    15·1 answer
  • Need answers fast please answer
    7·1 answer
  • Point P is located at (4,8) on a coordinate plane. Point P will be reflected over the x - axis. What will be the coordinates of
    8·1 answer
  • A new shopping mall records 150 total shoppers on their first day of business. Each day after that, the number of shoppers is 15
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!