Well with 10 metre inside diameter …

CBSE, JEE, NEET, CUET

Question Bank, Mock Tests, Exam Papers

NCERT Solutions, Sample Papers, Notes, Videos

Well with 10 metre inside diameter is dug 14m deep.Earth taken out of it is spread all around to width of 5 metre to form an embankment.Find the height of the embankment.

Posted by Diya Garg 5 years, 10 months ago

CBSE > Class 09 > Mathematics

1 answers

Sia ? 5 years, 10 months ago

Given the diameter = 10 m
So, the radius of the well = 5 m
Height of the well = 14 m
Width of the embankment = 5m
Therefore, radius of the embankment = 5 + 5 =10 m
Let h' be the height of the embankment,
Hence, the volume of the embankment = Volume of the well
That is, $\pi$ (R - r)²h' = $\pi r ^ { 2 } h$
$\Rightarrow$ (10² - 5²) $\times$ h' = 5² $\times$ 14
$\Rightarrow$ (100 - 25) $\times$ h' = 25 $\times$ 14
$\Rightarrow h' = \frac { 25 \times 14 } { 75 } = \frac { 14 } { 3 }$
Therefore, h' = 4.67 cm approximately.

0Thank You

ANSWER

Related Questions

X³-12x²+39x-28

Posted by Sukhi Devasi 8 months, 2 weeks ago

CBSE > Class 09 > Mathematics

0 answers

The polynomial of the type ax²+bx+c,a=0 is called

Posted by Gnani Yogi 8 months, 1 week ago

CBSE > Class 09 > Mathematics

0 answers

2x+5y

Posted by Yash Pandey 1 month ago

CBSE > Class 09 > Mathematics

0 answers

3√2×4√2×12√32

Posted by Manas Khurana 8 months, 2 weeks ago

CBSE > Class 09 > Mathematics

0 answers

This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

Few rules to keep homework help section safe, clean and informative.

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
Ask specific question which are clear and concise.

Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

Posted by T Prudhvi 5 months, 3 weeks ago

CBSE > Class 09 > Mathematics