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
anastassius [24]
3 years ago
9

What is the surface area of a can that has radius of 9 ft. and height of 3 ft.? SA = __________ ft.2. Use 3.14 for pi. A. 678.2

B. 458.6 C. 354.3 D. 292.0
Mathematics
1 answer:
Kruka [31]3 years ago
8 0

Answer:

678.2

Step-by-step explanation:

To find the surface area you need to use the expression 2\pi rh + 2\pi r^2

When you substitute the numbers in you get 678.24

You might be interested in
A gas station sells 1400 gallons of gasoline per hour if it charges $2.50 per gallon but only 1000 gallons per hour it charges $
Evgen [1.6K]

Answer:

xsdcgsd

Step-by-step explanation:

zdrfgzerdg

3 0
3 years ago
Please help on this please thank you
Kamila [148]

30% = 0.3

Since 30% of 90 is 27, the average person uses approximately 27 gallons of water outdoors per day.

Solution:

To write percent to decimal, divide the number by 100.

$30\%=\frac{30}{100}

       $=\frac{30\div10}{100\div 10}

       $=\frac{3}{10}

       = 0.3

30% = 0.3

Average use of water each day = 90 gallons

30\%  \ \text{of} \ 90=0.3 \times 90

                = 27

Since 30% of 90 is 27, the average person uses approximately 27 gallons of water outdoors per day.

6 0
3 years ago
The height (in feet) of punted football is a function of the time the ball is in the air. The function is defined by h(t) = - 7t
Kamila [148]

Answer:

The height of the football after 4 seconds is 80 feet.

Step-by-step explanation:

You know that the height (in feet) of punted football is a function of the time the ball is in the air and it is defined by:

h(t) = -7*t²+48*t

To calculate the height of the ball after 4 seconds, you must replace the time t by the time of 4 seconds:

h(4) = -7*4²+48*4

Solving, you get:

h(4) = -7*16+48*4

h(4) = -112+192

h(4)= 80

<u><em>The height of the football after 4 seconds is 80 feet.</em></u>

8 0
3 years ago
The travelers are adding a new room to their house. the room will be a cube with volume 3375 ft.³.they are going to put in hardw
Talja [164]

Answer:

$ 2250

Step-by-step explanation:

3375 = s³

s = ∛3375

s = 15 ft.

floor area = s² = (15 * 15)

floor area = 225 ft²

the contractor charges $10 per ft².

therefore,  

the hardwood cost = 225  x  $10 = $2250

7 0
3 years ago
Read 2 more answers
A set of wrist watch prices are normally distributed with a mean of 767676 dollars and a standard deviation of 101010 dollars. W
Akimi4 [234]

Answer:

0.8224

Step-by-step explanation:

Data

  • mean: $76
  • standard deviation, sd: $10
  • first value of interest, x1: $63
  • second value of interest, x2: $90

z-score for x1:

z1 = (x1 - mean)/sd = (63 - 76)/10 = -1.3

z-score for x2:

z2 = (x2 - mean)/sd = (90 - 76)/10 =  1.4

The  proportion of wrist watch prices are between $63 and $90 is:

P(z1 < z < z2) = P(z < 1.4) - P(z < -1.3)

P(z < 1.4) = 0.9192 (see first picture attached)

P(z < -1.3) = 0.0968 (see second picture attached)

P(z1 < z < z2) = 0.9192 - 0.0968 = 0.8224

7 0
3 years ago
Other questions:
  • What is the equation of the line parallel to the given line with an x-intercept of 4? y = x +
    15·2 answers
  • To convert kilograrns to grams, you can use the ratio<br><br> 1000grams/1kilogram
    15·1 answer
  • What is 17kg into grams
    7·1 answer
  • PLEASE HELP!!!!! ASAP!!
    7·1 answer
  • You are filling a bookcase with books. The bookcase is 3 feet wide. Your hardcover books are 1 1/2 inches wide and your paperbac
    9·1 answer
  • Rubi charges each family that she babysits a flat fee of $20 for the night
    13·1 answer
  • (iii) A relation between a and b such that point (a,b) isequidistant from the points (8,3) and (2,7)​
    12·1 answer
  • Which of the following numbers has the greatest value?
    15·1 answer
  • In the diagram shown, the area of the triangle is 44.3m². If b = 14.1m and the angle at C = 48°, work out x. Round to 1 DP. X C
    10·1 answer
  • Find the measure of the exterior 1.<br><br> A. 11°<br> OB. 127°<br> O C. 85°<br> O D. 95°
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!