A=12(a+b)h\displaystyle A = \frac{1}{2}(a + b)hA=21(a+b)h
Work out the value of h h\,h when A=65A = 65A=65, a=7a = 7a=7 and b=6b = 6b=6
296 exam-style questions on AQA GCSE Maths Substitution. Each one has a worked solution and a mark scheme showing where the marks go.