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
Leni [432]
3 years ago
6

Please help with this too​

Mathematics
1 answer:
vovikov84 [41]3 years ago
8 0

Answer:

Step-by-step explanation:

Garden roller is in the shape of cylinder.

So, one revolution =  Curved surface area of the cylinder

diameter  = 70 cm

radius = 70/2 = 35 cm

h = 100 cm

Curved surface area of the cylinder = 2πrh

                                                           = 2*\frac{22}{7}*35*100

                                                           = 22000 square cm

Area covered in 15 revolutions = 15 * 22000

                                                    = 330000 square cm

2) Coin

diameter = 22 mm

r = 22/2 = 11 mm

Volume of coin = 66 mm

πr²h = 66

\frac{22}{7}*11*11*h=66\\\\\\h=\frac{66*7}{11*11*22}\\h=0.17 mm

You might be interested in
Liana is putting a border around a right triangle and needs to figure out the triangle's height. If the triangle has a base leng
nordsb [41]

Answer:

6

Step-by-step explanation:

6 0
3 years ago
You and your family are planning to rent a van for a 1 day trip to Disney World in Orlando, Florida. For your
Oksana_A [137]
It’s only one day, so:
X - number of miles
Y- total cost for one day Enterprise
Y = 25 + 0.5X

8 0
3 years ago
Solve the equation : 2x + 7 = 21 and find the value of x. Is 2x + 7 = 21 a first degree equation or not?
Paraphin [41]

Answer:

The proposed equation is solved as follows:

2X + 7 = 21

2X = 21 - 7

2X = 14

X = 14 / 2

X = 7

The value of X is 7.

A first degree equation is an algebraic equation in which each term is either a constant or a product of a fixed term on a single variable. Therefore, this equation is a first degree one, since it only has a single variable, which is X.

4 0
3 years ago
Pls help i dont understand this question​
nikitadnepr [17]

Answer:

The difference is subtracting 6.5

19.5, 25, 31.5

Step-by-step explanation:

3 0
3 years ago
The houses of pine street are numbered from 1-40. How many houses contains the at least once ​
vaieri [72.5K]

Answer:

the houses that contain least once is 20 below

Step-by-step explanation:

5 0
4 years ago
Other questions:
  • Change 108% to a mixed number and reduce, if possible.
    9·2 answers
  • Elasticity is also called
    13·1 answer
  • Find the x-intercept and y-intercept of the line.
    15·2 answers
  • NEED HELP FAST PLZZ!!!!!!!
    11·1 answer
  • Simplify 9 log9 (7) is the answer 7
    10·1 answer
  • 3x+1+5x=7+15+7x what is x?
    7·2 answers
  • Melvin and Frank caught a lizard in their backyard. Its body is 17/8 long, and its tail
    13·1 answer
  • EXPLAIN PLEASE!!:)))))
    6·1 answer
  • Factor the linear expression 15x-10 using the greatest common factor of the terms
    14·1 answer
  • Answer this question to get marked as barinliest!!!!!!!!
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!