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
ella [17]
4 years ago
10

Can someone help me with this 20 points

Mathematics
2 answers:
Novay_Z [31]4 years ago
5 0

Answer:

9cm

8 cm

Step-by-step explanation:

The diameter is 2 times the radius

d = 2r

d = 2(4.5)

d = 9 cm

The diameter is 16cm

d = 2r

16 = 2r

Divide each side by 2

16/2 = 2r/2

8 =r

The radius is 8 cm

Nostrana [21]4 years ago
4 0

1st : to find the diameter just multiply the radius of the circle by 2

<em>2nd: divide the diameter by 2 for the circle so the radius of the circle is 8</em>

You might be interested in
You blow a bubble in the shape of a sphere. It has a radius of 6 inches. Which choice is closest to its surface area? Use 3.14 t
Arte-miy333 [17]
To solve for the surface area of a sphere, the formula is 4*pi*r^2. Since we are using 3.14 instead of pi, the formula becomes 4*3.14*r^2. To solve, all we have to do is substitute in the radius for r and solve it like a normal question.

SA=4*3.14*r^2
SA=4*3.14*6^2
SA=452.16

Since we used 3.14 instead of pi, we have to say this is an approximate answer. This means the surface area of this sphere is 452.16 square inches.

5 0
3 years ago
Plz solve for the area, questions 10,11,and 12 plz
marishachu [46]

Answer:

10-52.85ft squared  11-144.84centimeters squared 12-304meters squared

Step-by-step explanation:

A-bh/2 10-7*15.1=105.7/2=52.85ft squared

A-bh 11-10.2*14.2=144.84cenitmeters squared

A-bh 20*15.2=304meters squared

4 0
3 years ago
Brandon completed 12 1/2 problems in 50 minutes if he worked at a constant rate how long would it take him to complete in 8 prob
adelina 88 [10]

Answer:

4 questions

Step-by-step explanation:

50 divided by 12.5 is 4

4 0
3 years ago
To find the value of an expression is to what?
DochEvi [55]

Answer:

evaluate

Step-by-step explanation:

um duh

but I hope I helped in some way

7 0
3 years ago
Read 2 more answers
What is 4 and 3/4 - 1 and 1/3? The answer is one of these: 2 and 2/7, 2 and 2/12, 3 and 5/12, or 3 and 5/7
nignag [31]

Answer:

3 and 5/12

Step-by-step explanation:

4 \frac{3}{4}   = \frac{19}{4}\\ \\1\frac{1}{3}  = \frac{4}{3}

\frac{19}{4} - \frac{4}{3} \\\\\frac{19(3) - 4(4)}{12} \\\\\frac{57 - 16}{12} \\\\\frac{41}{12} \\

This fraction is equivalent to,

3 and 5/12 = 3\frac{5}{12} = \frac{12*3 + 5}{12} = \frac{41}{12}

8 0
4 years ago
Other questions:
  • What sequence is next 3 9 27 81
    13·1 answer
  • A secretary answered 88 phone calls in a day. Of these phone calls 18 we're from Plano Texas. What is the ratio of the number of
    6·1 answer
  • while working out susie does 25 sit ups for every 12 push ups if she does 60 push ups how many sit ups will she do?
    14·2 answers
  • Find the area of the smaller sector (please help me(​
    12·1 answer
  • Will mark brainliest
    9·1 answer
  • In an input/output table, all outputs are 0, regardless of the input. What could the function equation be? Select all that apply
    6·1 answer
  • Help me plz I will give brainliest
    7·1 answer
  • What is the solution to |x-3|&lt;12?
    5·1 answer
  • Find the equation of the line perpendicularly to y=3x - 6 that runs through the point (-1, -3), need help ASAP
    7·1 answer
  • Graph a parabola whose vertex is at (3,5)(3,5)left parenthesis, 3, comma, 5, right parenthesis with yyy-intercept at y=1y=1y, eq
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!