A 1 metre cube has one face on the ground and one face against a
wall. A 4 metre ladder leans against the wall and just touches the
cube. How high is the top of the ladder above the ground?
Four rods are hinged at their ends to form a convex quadrilateral.
Investigate the different shapes that the quadrilateral can take.
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Growing Triangle
Age 14 to 16 Short Challenge Level
The base of a triangle is increased by 20% and its height is increased by 30%. By what percentage is the area of the triangle increased?