Math, asked by nibeditapanja94, 4 months ago

The height of a hollow cylinder is 20 cm. If its outer
radius is 7cm and its thickness is 2cm. then find its whole
surface and volume.

Answers

Answered by nikunjc971

2

Step-by-step explanation:

Given : radius r=3.5cm and height h=7cm

Surface area of a hollow cylinder =2πr(h+r)

=2×3.14×3.5(7+3.5)

=230.79cm square ≈

231

∴ Surface area =231cm square

Previous Question

Next Question

Similar questions

Chemistry, 2 months ago

what is corrosion what reaction takes place to corrode an iron why alluminium doesn't corrode no spams pls ...

English, 2 months ago

who is the founder of Wipro Limited...

English, 2 months ago

overeating is the wastage of food and dangerous for health people should save food for hungry people write a letter to editor of an English daily highlighting news paper why the people should control the habit of overeating write a letter of 100-120 words ...

Math, 4 months ago

Exercise - 3 ns 1. Find the area of each of the following triangles. 6 cm (i) 7.5 cm 4 cm 5.4 cm 8 cm (iv)...

Math, 4 months ago

a person earns 15% profit on the sale of an article. if the sale prize of that article is 23 then, its cost prize is...

Hindi, 11 months ago

What is the answer ...

English, 11 months ago

sheetal saw a cute puppy while coming home from school which of this is common noun proper noun collective noun abstract noun concrete noun and material noun?

Math, 11 months ago

solve the question it is a school it having 25 rooms each room had 25 children all are having a bag and 25 books each book have 25pages each page 25 lines and each line 25 words Do that how many bags,pages,and books words having all children...