Substitution

$A=12(a+b)h\displaystyle A = \frac{1}{2}(a + b)h$

Work out the value of $A\,$ when $a = 7$ , $b = k$ and $h = 10$

Give your answer in terms of $k$ .

[2]

Substitution

$A=12(a+b)h\displaystyle A = \frac{1}{2}(a + b)h$

Work out the value of $A\,$ when $a = 7$ , $b = k$ and $h = 10$

Give your answer in terms of $k$ .

[2]

Substitution

Substitution Questions