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Resolves #41067. Made question more clear about the requirement for a…

…n exact answer.
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1 parent 725121f commit fe2cb56c3fc9992ae401059418f4db632e1c4039 @shanem shanem committed Feb 24, 2013
Showing with 6 additions and 6 deletions.
  1. +6 −6 exercises/area_of_a_circle.html
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12 exercises/area_of_a_circle.html
@@ -61,7 +61,7 @@
</div>
<div class="question">
- <p>Suppose the radius of a circle is <code>\color{<var>R_COLOR</var>}{<var>R</var>}</code>. What is its area?</p>
+ <p>Suppose the radius of a circle is <code>\color{<var>R_COLOR</var>}{<var>R</var>}</code>. What is its <em>exact</em> area?</p>
</div>
<div class="solution" data-forms="integer, proper, improper, mixed, decimal, pi"><var>Math.PI * R * R</var></div>
@@ -88,7 +88,7 @@
</div>
<div class="question">
- <p>Suppose the area of a circle is <code>\color{<var>K_COLOR</var>}{<var>R === 1 ? "" : R * R</var>\pi}</code>. What is its radius?</p>
+ <p>Suppose the area of a circle is <code>\color{<var>K_COLOR</var>}{<var>R === 1 ? "" : R * R</var>\pi}</code>. What is its <em>exact</em> radius?</p>
</div>
<div class="solution" data-forms="integer, proper, improper, mixed, decimal, pi"><var>R</var></div>
@@ -115,7 +115,7 @@
</div>
<div class="question">
- <p>Suppose the diameter of a circle is <code>\color{<var>D_COLOR</var>}{<var>2 * R</var>}</code>. What is its area?</p>
+ <p>Suppose the diameter of a circle is <code>\color{<var>D_COLOR</var>}{<var>2 * R</var>}</code>. What is its <em>exact</em> area?</p>
</div>
<div class="solution" data-forms="integer, proper, improper, mixed, decimal, pi"><var>Math.PI * R * R</var></div>
@@ -143,7 +143,7 @@
</div>
<div class="question">
- <p>Suppose the area of a circle is <code>\color{<var>K_COLOR</var>}{<var>R === 1 ? "" : R * R</var>\pi}</code>. What is its diameter?</p>
+ <p>Suppose the area of a circle is <code>\color{<var>K_COLOR</var>}{<var>R === 1 ? "" : R * R</var>\pi}</code>. What is its <em>exact</em> diameter?</p>
</div>
<div class="solution" data-forms="integer, proper, improper, mixed, decimal, pi"><var>2 * R</var></div>
@@ -171,7 +171,7 @@
</div>
<div class="question">
- <p>Suppose the circumference of a circle is <code>\color{<var>C_COLOR</var>}{<var>2 * R</var>\pi}</code>. What is its area?</p>
+ <p>Suppose the circumference of a circle is <code>\color{<var>C_COLOR</var>}{<var>2 * R</var>\pi}</code>. What is its <em>exact</em> area?</p>
</div>
<div class="solution" data-forms="integer, proper, improper, mixed, decimal, pi"><var>Math.PI * R * R</var></div>
@@ -199,7 +199,7 @@
</div>
<div class="question">
- <p>Suppose the area of a circle is <code>\color{<var>K_COLOR</var>}{<var>R === 1 ? "" : R * R</var>\pi}</code>. What is its circumference?</p>
+ <p>Suppose the area of a circle is <code>\color{<var>K_COLOR</var>}{<var>R === 1 ? "" : R * R</var>\pi}</code>. What is its <em>exact</em> circumference?</p>
</div>
<div class="solution" data-forms="integer, proper, improper, mixed, decimal, pi"><var>Math.PI * 2 * R</var></div>

4 comments on commit fe2cb56

@beneater
Khan Academy member

@cbhl @spicyj I'm tempted to revert this because we always expect an exact answer unless we specifically state the answer should be rounded (counterexamples are bugs). Stating that this question expects an exact answer could cause confusion about what's expected for questions that don't explicitly say "exact".

@spicyj
Khan Academy member
spicyj commented on fe2cb56 Feb 25, 2013

+1

@cbhl
cbhl commented on fe2cb56 Feb 25, 2013

Sounds good to me.

@cbhl
cbhl commented on fe2cb56 Feb 25, 2013

... and it's done.

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