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
murzikaleks [220]
3 years ago
12

The windscreen wiper of a car sweeps

Mathematics
1 answer:
AVprozaik [17]3 years ago
6 0

Answer:

A ≈ 530 cm²

Step-by-step explanation:

The swept area equals the total area covered by the blade minus the unswept area.

The area of a sector with radius r and angle θ is:

A = (θ / 360) πr²

So the swept area is:

A = (θ / 360) πR² − (θ / 360) πr²

A = (θ / 360) π (R² − r²)

A = (150 / 360) π (21² − 6²)

A ≈ 530 cm²

You might be interested in
DeAnna has 80 books in her collection If 60% of the books of fiction how many of the books or nonfiction
tatuchka [14]

Answer: 48 books

Step-by-step explanation: Start by converting 60% to a decimal/fraction (60/100). From there, you can multiply it by the total (80) to get the answer.

6 0
3 years ago
Gym A charges $65 a month plus $7 per visit. The monthly cost at Gym B is represented by y = 7x + 55, where x is the number of v
Rama09 [41]
Gym B is $10 cheaper a month.

For Gym A y=7x + 65 where x is the number of visits (Gym A chages $7 per visit).
6 0
3 years ago
A rectangular cake pan has a volume of
enot [183]

Step-by-step explanation:

volume of a rectangular pan = length of the pan × width of the pan × height of the pan

V=l.b.h

234=9.13.h

h=234/9×13

h= 2in.

hope this helps you.

7 0
3 years ago
Read 2 more answers
Each exterior angle of a regular polygon is 10°. How many sides does it have?
jeka94

Answer:

if exterior angle is 10 degrees, then interior angle is 180 -10 = 170 deg.

Each trinaglke inside the polygon will be isosceles with two angles of 170/2 - 85 degrees each.

So, angle at centre = 180 -170 = 10 deg.

Ttal angle at centre = 360 deg.

No of sides = 360 /10 = 36 sided polygon.

b) Sum of interior angles is given by (2N-4) Right angles

So: 9900 = (2N-4)x90 = 180N - 360

180N = 9900 +360 = 10260

N = number of sides = 10260 / 180 = 57 sides

5 0
3 years ago
Just need help with 6 please
alexdok [17]

Answer:

Congruent, SSS

Step-by-step explanation:

The dashes on the sides of the triangles represent that the corresponding lengths of the triangles are equal in length. Since it is given that all corresponding lengths of the triangles are equivalent, the triangles are congruent by the SSS (side, side, side) test.

Hope this helps :)

4 0
3 years ago
Other questions:
  • A group of 120 people were asked whether their income level is above or below $25,000 and whether they subscribe to a movie chan
    15·2 answers
  • A water tank is in the shape of a cylinder with a diameter of 20 feet and
    14·2 answers
  • Jason paid $15.50 for 3 slices of pizza and 2 burgers. Susan paid $20 for 1 slice of pizza and 4 burgers. Write a system of equa
    12·1 answer
  • Consider the following system of equations:
    14·2 answers
  • Collins middle school 180 sixth grade students. If the sixth grade is 30% of the total school, how many students are in the midd
    11·1 answer
  • F=(2xy +z³)i + x³j + 3xz²k find a scalar potential and work done in moving an object in the field from (1,-2,1) to (3,1,4)​
    15·1 answer
  • . AB and BC are two sides of a triangle. If the ratio of AB:BC is 3:4, AB = 60 and
    6·2 answers
  • Antonia recorded the number of cups of hot chocolate that were sold at soccer games compared to the outside temperature. The gra
    14·2 answers
  • I need this answer plz and thx
    8·1 answer
  • Tito receives a weekly salary of ​$500 at an appliance store. He also receives a7 ​% commission on the total dollar amount of al
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!