hi
pls solve this question
and answers me
Answers
Answer:
Given :
Radius of cylinder = 4cm
Height = 10cm
To find : Surface area of the cylinder with open top and closed bottom
We know that,
Curved surface area = 2πrh
[Curved surface area refers to the area of the figure excluding the top and bottom]
Hence Surface area of a cylinder with open top and closed bottom will be :
Curved surface area + Area of base
Curved surface area:
2 \times \dfrac{22}{7} \times 4 \times 102×
7
22
×4×10
= \dfrac{1760}{7} {cm}^{2}=
7
1760
cm
2
Area of base :
In a cylinder the base is made of a circle.
Therefore area of base = πr²
\dfrac{22}{7} \times 4 \times 4
7
22
×4×4
= \dfrac{352}{7} {cm}^{2}=
7
352
cm
2
Adding both the areas,
\dfrac{1760 + 352}{7}
7
1760+352
= \dfrac{2112}{7} {cm}^{2}=
7
2112
cm
2
Hence final answer =≥ 301.6 cm² (approx)
Note :
Why is the shape referred a cylinder?
In any 3d shape we have learnt, we need 3 measurements to find the area : Length, breadth and height. Only in a few shapes like the cylinder, sphere, cone and hemisphere, 2 measurements are required.Therefore we can conclude that the shape must be a cylinder.
Answer:
hi my cutieee
which std you are. i am in tamil nadu in tamil nadu i am in chennai in chennai i am in chitalapakkam.
Step-by-step explanation:
Please Rate My Answers And Put Thanks To My Answers And F(Follow) Me And Mark Me As Brainliest!!!!