Sarthaks APP
0 votes
6.6k views
in Mathematics by (11.0k points)

A 20 m deep well with diameter 7 m is dug and the earth from digging is evenly spread out to form a platform 22 m by 14 m. Find the height of the platform. [Use π = 22/7]

1 Answer

0 votes
by (18.2k points)
selected by
 
Best answer

The shape of the well will be cylindrical.

Depth (h) of well = 20 m

Radius (r) of circular end of well =7/2 m

Area of platform = Length × Breadth = 22 × 14 m2 

Let height of the platform = H

Volume of soil dug from the well will be equal to the volume of soil scattered on the platform.

Volume of soil from well = Volume of soil used to make such platform

Therefore, the height of such platform will be 2.5 m.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...