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MATT: In maths we do it properly by substituting thevalues into the formula. So if the mass was750kg, and the acceleration is 11 meters persecond, squared, we can put them in. MATT: We remember ...

DRESS MAKER:'To calculate the circumference of a circle, I need to remember the formula two ... This clip will be relevant for teaching Maths at KS3/GCSE in England Wales and Northern Ireland.