Problem 2377. Area of a disk

Created by Shravankumar P

Solve Later

{"relationships":[{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/document","relationshipId":"rId1","target":"/matlab/document.xml"},{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/output","relationshipId":"rId2","target":"/matlab/output.xml"}],"parts":[{"partUri":"/matlab/document.xml","relationship":[],"contentType":"application/vnd.mathworks.matlab.code.document+xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\"?><w:document xmlns:w=\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\"><w:body><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Find the area of a disk or circle.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/><w:jc w:val=\"left\"/></w:pPr><w:r><w:t>x= radius of the disk.</w:t></w:r></w:p></w:body></w:document>"},{"partUri":"/matlab/output.xml","contentType":"text/xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?><embeddedOutputs><metaData><evaluationState>manual</evaluationState><layoutState>code</layoutState><outputStatus>ready</outputStatus></metaData><outputArray type=\"array\"/><regionArray type=\"array\"/></embeddedOutputs>"}]}

Solve

Solution Stats

1130 Solutions
236 Solvers

Last Solution submitted on Jun 14, 2021

Last 200 Solutions

Problem Comments

6 Comments

6 Comments

Show 3 older comments

Guillaume on 19 Jun 2014

Rather than using isequal on floating points which is bad practice and forcing the function to round its output to two decimals, you should test that the result is within a certain tolerance of the true value, like so: assert(abs(y_correct-crcl_area(x)) <= 0.01)

Ned Gulley on 19 Jun 2014

Good advice! Floating point math and isequal don't mix well.

bainhome on 8 May 2015

why don't you claim "pi"?really hate it.

Akansha Saxena on 7 Dec 2015

"pi" works, but currently, solution needs to be rounded off to 2 decimal places.
Would be better to increase the result tolerance.

Michael Eldredge on 2 Apr 2019

The numbers are wrong.

Please fix the test suite.

MAHMOUD ABDEL-LATIF on 11 Jun 2019

You need to specify that the answer must be rounded to 2 decimal places.

Solution Comments

Solution 1817413

1 Comment

1 Comment

H00 Bryan Daniels on 16 May 2019

You need to specify that the answer must be rounded to 2 decimal places.

Problem Recent Solvers236

Problem Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Problem 2377. Area of a disk

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers236

Suggested Problems

More from this Author3

Problem Tags

Community Treasure Hunt

Problem 2377. Area of a disk

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers236

Suggested Problems

More from this Author3

Problem Tags

Community Treasure Hunt

Players