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
Debora [2.8K]
3 years ago
10

Four cylindrical pillars of a building are to be painted. If the diameter of each pillar is 1.4m and it's height is 6m, find the

cost of painting the curved surfaces of all the pillars at the rate of Rs 10 per.sq.m.​
Mathematics
1 answer:
KatRina [158]3 years ago
8 0

Answer:

Rs. 1056

Step-by-step explanation:

Given: Diameter of each pillar= 1.4m

           Height= 6m

           Cost of painting the curved surfaces of all the pillars at the rate of Rs 10\ per\ m^{2}

First lets find out radius of each pillar.

Radius (r)= \frac{Diameter}{2}

∴ Radius (r)= \frac{1.4}{2} = 0.7\ m

Now, finding area of cylindrical pillar.

Formula; Area of curved surface= 2\pi rh

⇒ Area of curved surface= 2\times \frac{22}{7} \times 0.7\times 6 = 26.4\ m

∵ There are four cylindrical pillars.

∴ Curved surface area of four pillar= 4\times 26.4\ m= 105.6\ m^2

Curved surface area of four pillar is 105.6 m²

Next, finding the cost of painting the pillars.

As given, cost of painting is Rs 10 per m².

∴ Cost of painting 105.6 m²= 10\times 105.6 m^{2} = Rs. 1056

∴ The cost of painting the curved surfaces of all the pillars is Rs.1056.

You might be interested in
A scientist uses 3 gallon of liquid for every 6 hours he uses (blank) of a gallon each hour he works
adelina 88 [10]

Answer:

18

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
The length of a rectangle is four times the width. The perimeter of the rectangle is 45 inches. Write a system of
Yakvenalex [24]

Answer:

81 square inches.

Step-by-step explanation:

Draw a diagram to represent what you know.

You don't know the values of the lengths so represent them algebraically.

You know the perimeter is 45 inches and that the perimeter is calculated by the sum of all of the sides of a shape.

You can rearrange to find the value of a side you've denoted as some unknown variable.

The area is given by the product of the sides. Express this algebraically and then input the value you found.

4 0
2 years ago
What is 4.2345 rounded to the nearest tenth
MAVERICK [17]

Answer to question:

4.2

7 0
3 years ago
Read 2 more answers
ASAP 55 points Which expression is equivalent to ((x^(-4)y)/(x^(-9)y^(5)))^(-2) assume x = 0 ,y = 0
german

Answer:

I thought if you try to do an exponent on a zero, then the answer would always be undefined...

Step-by-step explanation:

6 0
3 years ago
Jina is saving money to buy a bike. She has $63 and is going to save an additional $9 each week. The bike costs $198. In how man
Cerrena [4.2K]

Answer:

Jina will have enough money to buy the bike in 15 weeks

Step-by-step explanation:

y = mx + b

198 = 9x + 63

Subtract 63 from both sides;

135 = 9x

Divide both sides by 9;

x = 15

3 0
3 years ago
Other questions:
  • Claritin 24 set of she rested and then did too and more how many sit-ups did he did do it now
    12·1 answer
  • I just need help with the last part. the c) part<br> Describe the end behavior of the function:
    11·2 answers
  • Which has the greater area: a 6 ‐centimeter by 4 1 2 ‐centimeter rectangle or a square with a side that measures 5 centimeters?
    14·1 answer
  • Transformation of functions
    6·1 answer
  • ONLY ANSWER IF YOU KNOW THIS ILL GIVE CORRECT ANSWER BRAINLIEST
    12·1 answer
  • Javier bought 3 bags of balloons for a party.
    8·2 answers
  • In the standard equation of a circle (x – h)2 + (y – k)2 = r2, h and k are...
    15·1 answer
  • Evaluate 11/3-2/8<br><br> A 1,7/12<br><br> B 1,5/8<br><br> C 7/12<br><br> D1,5/6
    14·1 answer
  • Is (2,-1) a solution of y≥2x+5?
    8·1 answer
  • Evaluate 4+(m-n)^4 when m =7 and n = 5
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!