GA3 Area of a circle

Error

There was an error loading the page.

Contributors

Feedback

From users who are members of Skills Audits for Maths and Stats :

Megan Oliver

said

Ready to use

1 year ago

History

○

Will Morgan 11 months, 2 weeks ago

Published this.

○

Megan Oliver 1 year ago

Gave some feedback: Ready to use

○

Megan Oliver 1 year ago

Created this as a copy of TRY TO ADD DIAGRAM.

There is only one version of this question that you have access to.

There are 2 other versions that do you not have access to.

Question statement

Find the area of a circle with diameter $\var{d}$ cm giving your answer to 1 decimal place.

{geogebra_applet('https://www.geogebra.org/m/ngcchpcj',[d: d])}

Give any introductory information the student needs.

			Name	Type	Generated Value

			d	integer	20
			t	integer	6

Automatically regenerate variables?

Name

Data type

Value

xxxxxxxxxx
 
random(6,8,10,12,14,16,18,20)

JME function reference

Description

Describe what this variable represents, and list any assumptions made about its value.

Can an exam override the value of this variable?

Generated value: `integer`

This variable doesn't seem to be used anywhere.

Parts

Gap-fill
1. Gap Gap 0 Mathematical expression
  1. Alt Unnamed alternative
  Add

Gap-fill

Ask the student a question, and give any hints about how they should answer this part.

$Area=$ Gap 0 $\text{ cm}^2$

Advice

To calculate the area of a circle we want to use the formula \[ A = \pi r^2, \]

where $r$ is the radius of the circle.

So, if the diameter, d, is $\var{d}$ cm, then the radius is, $r=\frac{d}{2}=\var{{d}/2}$ cm, then

\[ \begin{split} Area &\,=\var{{d}/2}^2 \times \pi \text{ cm}^2 \\ &\,= \simplify[all, fractionNumbers]{{{{d}^2/4}}pi} \text{ cm}^2 \\ &\,= \var{precround({d}^2/4*pi,1)} \text{ cm}^2. \end{split} \]

Use this link to find some resources to help you revise how to calculate the area of a circle.

Give a worked solution to the whole question.

Use this tab to check that this question works as expected.

There was an error which means the tests can't run:

Part	Test	Passed?
Gap-fill
Gap-fill		Hasn't run yet
Mathematical expression
Mathematical expression		Hasn't run yet

This question is used in the following exams:

Loading...

Error

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

Feedback

History

Comment

Checkpoint description

Will Morgan 11 months, 2 weeks ago

Megan Oliver 1 year ago

Megan Oliver 1 year ago

Error in variable testing condition

Error

Warning

Generated value: `integer`

Parts

Gap-fill

Loading...

Error

GA3 Area of a circle

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

Feedback

History

Comment

Checkpoint description

Will Morgan 11 months, 2 weeks ago

Megan Oliver 1 year ago

Megan Oliver 1 year ago

Error in variable testing condition

Error

Warning

Generated value: integer

Parts

Gap-fill

Generated value: `integer`