A=12(a+b)h\displaystyle A = \frac{1}{2}(a + b)hA=21(a+b)h
Work out the value of A A\,A when a=6a = 6a=6, b=2b = 2b=2 and h=4h = 4h=4
296 exam-style questions on Eduqas GCSE Maths Substitution. Each one has a worked solution and a mark scheme showing where the marks go.