More Lessons for GCSE Maths
Examples. videos and solutions to help GCSE Maths students learn how to solve word problems involving circles.
Doubling the Radius and Its Effect on Circumference
Just what happens to a circles circumference when you double the radius anyway?
Changing Circle Radius and its Effect on Area
Change the radius to see what relationship occurs between the old and new circle areas.
1. Mr.Wences is trying to figure out what size parachute to order for his gym class. Parachute A has a radius of 12 feet. If the parachute B is four times the radius of parachute A, what is the area of parachute B compared to parachute A?
How to calculate radius of a circle given its circumference?
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