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
fomenos
3 years ago
7

What is the total surface area?

Mathematics
1 answer:
Anastasy [175]3 years ago
3 0

Answer:

2198 cm²

Step-by-step explanation:

Total surface area of a cylinder = 2πrh + 2πr²

Radius, r = diameter/2

= 20cm/2

= 10 cm

Height, h = 25 cm

Total surface area of a cylinder = 2πrh + 2πr²

= 2*3.14*10*25 + 2*3.14*10²

= 1,570 + 6.28*100

= 1,570 + 628

= 2198 cm²

Total surface area of a cylinder = 2,198 cm²

You might be interested in
Write the standard form of the equation for the parabola shown in the graph.
emmasim [6.3K]

Answer : option A

From the graph

Vertex (-3,1)

Focus (-1,1)

The distance between vertex and focus is P

Distance between vertex and focus = -1 -(-3) = 2

P= 2

General equation for horizontal parabola is

(y-k)^2= 4p(x-h)

(h,k) is the vertex

Vertex (-3,1)  so h= -3  and k =1, we know p = 2

So equation becomes

(y-1)^2= 4(2)(x-(-3))

(y-1)^2= 8(x+3)

Answer : option A



3 0
3 years ago
Four brothers each bought two hotdogs and a bag of chips at the football concession stand. If the bag of chips was $1.25, and th
forsale [732]

The price of one hot dog was $1.65

<u>Step-by-step explanation:</u>

Given that each of the four brothers bought two hotdogs and a packet of chips each.

Total number of hotdogs they bought=4*2 =8

Total  bags of chips they bought= 4

price of a bag of chips=$1.25

Total price of items=$18.2

let the price of a hotdog=x

then8x+4\times 1.25=18.2

8x+5=18.2

8x=18.2-5

8x=13.2

x=13.2/8

  =1.65

The price of one hotdog=$1.65

7 0
4 years ago
Question
Misha Larkins [42]

Answer:72 minutes

Step-by-step explanation:

30/25=  1.2 * 60= 72

6 0
4 years ago
Solve the radical equation 3/(√x+3)=1.Be sure to check for extraneous solutions.
jeka94

Answer:

The solution to the equation is x = 0.

Step-by-step explanation:

Hi there!

First, let´s write the equation:

3/(√x+3)=1

To solve the equation, let´s start multiplying both sides by (√x+3)

3 = √x+3

subtract 3 to both sides of the equation

0 = √x

0 = x

Now, let´s check the solution:

3/(√x+3)=1

x = 0

3/(√0 + 3) = 1

3/3 = 1

1 = 1

Then, x = 0 is the solution to the equation.

4 0
3 years ago
a trapezoid with base measure of 23 km and 29km an area of 390km . find the height of the trapezoid.
cupoosta [38]
Hello!

To find the area of a trapezoid you use the equation

A =  \frac{a+b}{2} h

Put in the values you know

390 =  \frac{23+29}{2} h

Add

390 = \frac{52}{2} h

Divide

390 = 26 * h

Divide both sides by 26

15 = h

The answer is 15km

Hope this helps!
3 0
4 years ago
Read 2 more answers
Other questions:
  • 1. The value of k for which equation 9x2 + 8xk+8 = 0 has equal roots is:
    11·1 answer
  • Help!!!!! please!!!!
    6·1 answer
  • Angie has $1,032 in her savings account. If the bank pays 3.5% simple interest on savings, how much interest does she earn in on
    10·1 answer
  • A county real estate appraiser wants to develop a statistical model to predict the appraised value of houses in a section of the
    8·1 answer
  • 150 miles converted to kilometres?
    8·1 answer
  • A (blank) is a letter or symbol that represents some unknown value
    5·1 answer
  • At a sale , dresses were sold for $ 10 each. If the dresses originally cost $200 each, what percentage of its original price was
    12·1 answer
  • 12 people went to the circus together. 3 of the people are children and cost 3/10 less than the regular price. if the cost of ad
    11·1 answer
  • I just wanted to say that I hope everyone’s grades are good for the rest of the year! Keep working hard and you can do it. Have
    14·2 answers
  • Last year there were 750 students enrolled in Park School, but this year there are only 685 students enrolled. What is the perce
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!