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Two semicircle sit on the diameter of a semicircle centre O of twice their radius. Lines through O divide the perimeter into two parts. What can you say about the lengths of these two parts?

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Two Shapes & Printer Ink

Stage: 4 Challenge Level: Challenge Level:1
Two shapes

If I print this page which shape will require more yellow ink?

Estimate first making a note of your decision and how you made it.

How has this shape been created?

How would you get a reliable calculation for the area that needs yellow ink?

Create shapes of your own that look good.

Challenge yourself to calculate their areas.