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
BlackZzzverrR [31]
3 years ago
14

The diagram shows two circles with the same centre. The radius of the smaller circle is 2cm and the diameter of the larger circl

e is 8cm. Find the exact value of the area.
hello pls help me with question and show full working out ty :)

Mathematics
2 answers:
Phoenix [80]3 years ago
7 0

Answer: 12π sq. cm.

Step-by-step explanation:

To calculate the area of the shaded part, we will have to deduct the area of the smaller circle (s) from the area of the bigger circle(b).

Area b = π x 4^2

= 16π

Area s = π x 2^2

= 4π

Area of shaded part = 16π - 4π = 12π

nadya68 [22]3 years ago
6 0

Answer:

\boxed{Area = 12\pi  cm^2}

Step-by-step explanation:

<u><em>Area of larger circle:</em></u>

=> \pi r^2

Where r = 4

=> \pi (4)^2

=> 16\pi cm²

<u><em>Area of smaller circle:</em></u>

=> \pi r^2

Where r = 2

=> \pi (2)^2

=> 4\pi cm²

<u><em>Area of shaded part:</em></u>

=> 16\pi-4\pi

=> 12\pi cm²

You might be interested in
Cho and Jeff each bought a used bike. Jeff's bike was not on sale and cost the same amount as the
antiseptic1488 [7]
The right answer for the question that is being asked and shown above is that: "A. $30." Cho's bike was on sale for $20 less than the original price, and her total cost was half of what Jeff paid. Jeff pay A. $30 <span>for his bike</span>

Jeff = x (original price)
Cho = x-20


8 0
3 years ago
The first six plays in the Santa Fe Memorial high school football game had the following yardage results: -3, -5, 19, -7, -24, -
lys-0071 [83]
All the numbers added together are -2 and then -24 divided by the number of players which is 6
therefore the answer is -4
5 0
4 years ago
What are three terms in this equation ? 4x-2y+3​
enyata [817]
Answer;

They are 3 terms

The terms are the numbers and the variables separated by the minus sign and the plus sign
8 0
3 years ago
Complete the equation of the line whose y-intercept is (0,5) and the slope is 9.
madreJ [45]

Answer:

9x+y−5=0 9 x + y − 5 = 0 .

Step-by-step explanation:

5 0
3 years ago
apples cost $1 each and oranges cost $2 each. Noah has $10 to spend at the produce market. Can he buy 7 apples and 2 oranges? Ex
Harrizon [31]

Answer:

apple= $1

orange=$2

Noah has total $10

He can't buy 7 apples and 2 orange

Step-by-step explanation:

7 apple= $7

2 orange= $4

7+4=11

And Noah only has $10

8 0
3 years ago
Other questions:
  • The bottom part of this block is a rectangular prism. The top part is a square pyramid. You want to cover the block entirely wit
    9·1 answer
  • Find the area of the shaded regions below. Give your answer as a completely simplified exact value in terms of π (no approximati
    13·2 answers
  • Is 1 +4(3x-10)-12x equivalent to -9
    6·1 answer
  • What description represents the expression 5x -9?
    10·1 answer
  • Help ........................................................
    13·2 answers
  • If the sales tax for the city of Florida is 6.75%, how much tax would you pay for an item that costs $ 150.00?
    7·1 answer
  • An animal shelter currently has 30 dogs and 15 cats. What is the ratio of
    11·1 answer
  • Uhhh please help lol
    11·1 answer
  • Which one of the following expressions is represented by the diagram?
    15·2 answers
  • Help please!!
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!