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
Vedmedyk [2.9K]
3 years ago
13

The radius of a circle is increased from 8.008.00 to 8.038.03 m. Estimate the resulting change in​ area, and then express the es

timate as a percentage of the​ circle's original area. The estimated change in area is nothing msquared2.
Mathematics
1 answer:
Reika [66]3 years ago
7 0

Answer:

Step-by-step explanation:

The area of a circle is expressed as

Area = πr^2

Where r = radius of the circle

π = constant = 3.14

The radius of a circle is increased from 8.00800 to 8.03803 m. This means that the original radius of the circle is 8.00800 and the new radius of the circle is 8.03803

Area of original circle =

3.14 × 8.00800^2 = 201.36212096

Area of new circle =

3.14 × 8.03803^2 = 202.87516852203

Increase in area = 202.87516852203 - 201.36212096

= 1.51304756203

Expressing the change as a percentage, it becomes

1.51304756203/201.36212096 ×100

Percentage change = 0.75 %

You might be interested in
A car drives at a rate of 40 miles per
laiz [17]

Answer:

1 hour=40 miles

? hours=350miles

<u>1x350</u>

 40

=8 hours 3mins

Step-by-step explanation:

8 0
3 years ago
Entre Juan, Pedro, María y Luis tienen 62 cartas. Pedro tiene un tercio de las cartas de Juan. María tiene 3 cartas menos que Ju
fenix001 [56]

Answer:

Luis has 30 cards

Step-by-step explanation:

To solve this problem, we need to setup a system of equations.

If we call the amount of cards Juan has "J", Pedro "P", Maria "M" and Luis "L", we have that:

J + P + M + L = 62

P = J/3

M = J - 3

L = 2J

Substituting P, M and L in the first equation, we have:

J + J/3 + J - 3 + 2J = 62

13J/3 = 62 + 3

13J = 65 * 3

J = 15 cards

The amount of cards Luis has is:

L = 2J = 2 * 15 = 30 cards

8 0
3 years ago
I also need this asap
Mademuasel [1]

Answer:

x=180-(67+52)

Step-by-step explanation:

a linear pair is 180

we are already have two angles add them together

subtract that from 180 and you will get the last angle

4 0
3 years ago
Which linear function represents the line given by the point-slope equation y +7=(x + 6)?
tiny-mole [99]

Answer:

O f(x) = -x-1

Step-by-step explanation:

We want to isolate the 'y' variable, so we will subtract 7 from both sides.

y = x + 6 - 7

y = x -1

6 0
3 years ago
Last year Billy weighed 75kg. This year he weighed 90kg. With what percentage did his weight increase. SHOW ALL WORK!!!
polet [3.4K]

well let's round. 90= 100, 75=80 that is how I face it. now 80 is 1/5 of 5/5= 100. so as a (%) we would sort it like:::: it is 80% out of +100 so he must have grown around 13%-16% due to him being 75kg in the past.

5 0
3 years ago
Other questions:
  • Which equation yields the solutions x=−2 and x=5?
    15·2 answers
  • Are these right ???
    9·1 answer
  • PLZ HELP WILL GIVE BRAINLIEST!!!!!!!!!!! AND 20 POINTS!!!!!!!!!
    15·1 answer
  • Can u guys help me with this problem?
    8·1 answer
  • Jackson’s car was making a rumbling noise for two weeks. He decided to take it to the mechanic to get it checked out. To diagnos
    7·1 answer
  • If you were babysitting, which would you rather: Charge $5 for the first hour and $8 for each additional hour? Charge $15 for th
    14·1 answer
  • Compute:<br><br> 11^2−(12−4)^2+3=
    8·2 answers
  • Write an equation of a line with s of slope of 7/8 and a y-intercept of 5/9 s
    13·2 answers
  • Write a two column proof. (answer what you can if possible)
    10·1 answer
  • 10. Contacts. Assume that 30% of students at a university
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!