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Find the perimeter and area of a holly leaf that will not lie flat (it has negative curvature with 'circles' having circumference greater than 2πr).

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Quadarc

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Two Shapes & Printer Ink

Age 14 to 16 Challenge Level:
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.